Should bioware do one final shepard game?

Of course a lot of stuff would have to change. It would be up to Bioware what changes to make.

Here's one way that could happen.

ME2, now ME1, starts off like the original ME2 started. The SR1 comes under attack suffering some casualties. Shepard does not die. For roughtly the next 2 years, Shepard helps with the recovery of the bodies, or what's left of them, from the SR1. After that is assigned to find the ones responsible for the attack. One day on the Citadel, Shepard encounters Miranda Lawson who mentions colonists have been abducted. To prove it, Shepard joins Lawson on Freedom's Progress. Even though the Alliance is not in favor of Shepard working with Cerberus, they agree something has to be done. Plus Cerberus will provide a ship for Shepard to use.

The crew and squad, Williams, Alenko, Traynor, Cortez, Moreau(without a disability), Daniels, Connelly, Chakwas, from the SR1 join Shepard. Lawson will also be on the squad. Throughout the game, Shepard will keep Udina and Hackett updated with her/his progress. Throughout the game, TIM will make a couple of cameos to pass any useful information to Shepard that might help with the mission.

After getting the ship, it's suggested to take along a turian sincde it was with their help in building the SR1 to find out who was responsible for destroying the SR1. Garrus Vakarian is givng permission by his boss to help Shepard get answers. The other squadmates that will be recruited are Mordin Solus, Samara. Thane, and Grunt.

When it comes to the IFF, the ships that houses the IFF is one of unknown origins. While on the ship, it is scanned for future use.

The suicide mission won't be suicide, just a very challenging mission since no one knows what to expect when entering the galactic core. Squadmates will not be the ones to provide upgrades to the ship. At certain points in the game, the player will get the option to purchase that upgrade. Loyalty mission wil have nothing to do with deciding if a character dies or not. The crew being abducted won't happen. Once the IFF is found, it would be up to Shepard to go through the omega 4 relay at that time. Since the edi hologram was able to open doors on the collector ship, it will be able to do the same on the collector base. The only possible deaths is if no upgrades are purchased for the ship, fireteam leader and the biotic barrier. Each squadmate and Shepard will carry a rucksack with explosives. Thses exsplosaives will be planted as the squadmates move throughout the base. When encountering the giant looking thing, questions arise at too why the collectors are building it. Instead of fighting it, Shepard fights the collector general.

Once the base is destroyed, Shepard hands any infornation over to the Allainc e for them to investigate.

ME2, formerly known as ME1, starts with Shepard on the SR2 with crew and squad, Willaims and Alenko. A long for the rise is Nihlus. Before going to Eden Prime, Shepard and Nihlus complete a couple of missions. The reason for that is Shepard has been elected to become a spectre. After Eden Prime, the council will not talk with Udina C-Sec has completed their investigation. So Udina suggests to Shepard to travel to Feros since there were reports of geth in the area and  comms were lost with the colony. On Feros, Shepard encounters Liara t'soni who passes the Cipher to Shepard. She is a former commando who studies protheans. She is taken back to the citadel. While she talks with Udina, Shepard gathers more evidence. Shepard encounters Vakarian who just completed his investigation. Later findsa a quarian who has an audio file that confirms Saren was involved with Eden Prime. Saren is no longer a spectre. Vakarian and Tali join the squad. Wrex will join just before Shepard leaves.

On Virmie, A/K both survive. Wrex leaves Shepard to go after the cure. Shepard finds him wounded from dealing with whoever. The cure was destroyed before he could get it. 

Throughout the game, the conversation with Sovereign and Virgil have been recorded. After talking with Virgil, it downloads to Shepard's omni-tool plans for a weapon that could destroy the reapers.

The fight with Sovereign is different from the former ME1. The reaper is taking damage. It releases it's hold of the tower to focus on the Alliance ships. Within a few minutes. several Alliance ships are destroyed. Once Saren is finally destroyed, the reaper is destroyed as well.

Udina becomes human councilor, the destiny ship is seriously damaged, the council survives since they used a shuttle to fly away from the battle. After talking with Shepard and hearing the recordings, the council decides to find a way to stop the reapers.

Arrival would/could be a mission after Saren is dealt with having Shepard learning the reapers are on their way to the galaxy.

ME3 will be slightly different from the original ME3. Liara is on Mars investigating more clues to help explain the plans that were given to by Virgil. Squadmates for the game would be Alenko, Williams, Javik, Grunt, Vakarian, T'soni, Tali and Samara. Miranda joins the squad part way through the game.

There will be no chance for peace between the geth and quarians, at least not the way that it happens in the old ME3. Instead of happening because of reaper interference, it happens because Han 'I have an itchy trigger finger' Gerrell stands down long enough that the geth stop firing. No one knows how long the peace will last, but they will worry about that after the reapers have been dealt with.

The Citadel coup will happen after Thessia. Cerberus will be dealt with before finishing off the reapers. There will be no silly beam run crap. There will be no thing aka catalyst. Once the arms to the Citadel are fully opened, the crucible fires it's beam of destroy.

Will Bioware do the above? No. What the above does is give the opening for a sequel with either Shepard returning or a whole new cast of characters.

If they were to remake the trilogy, I would keep the games in the current order, but with changes. A couple of changes would be Shepard not dying at the beginning of ME2, the collectors be a long side mission with the main mission traveling to darkspace to get answers on how to deal with the reapers. The other change is MEA. In a remake have some stuff seen/heard in MEA happen in the trilogy. In ME1, have the player be able to see the Hyperion under construction when on the moon for a mission. Maybe a scene with Alec Ryder.

Get rid of Moreau. Make Chambers the pilot.

Have Chambers be Udina's secretary

Have Chambers be TIM's mistress

Chambers can have the role the guy had in ME3. Walk around in circles saluting Shepard when activated

Chambers is the catalyst

space hamster is female named Chambers

Chambers can be the vendor arguing with refund guy

Chambers replaces t'soni as the so-called prothean expert

Chambers can be avina

Chambers takes the role of Jenkins in ME2, formerly known as ME1, except she doesn't die. She is reassigned to another unit. In ME3 she is assigned security detail for the council. Her and Shepard face each other during the coup.