Things need to be answered in DLC and sequels

I always interpreted the "Ice-talker" myth as a reference to the ancient, Angaran AI locked below the ice. Although that is quite a mundane conclusion for something as mysterious as the "ice-talkers".

Who needs a cook when Drack makes such a great roast?

I didn't even consider that, but now I really hope they pull a bait-and-switch and reveal that the burned body was an unfortunate passer by. I want an "Arrival-esque" rescue mission where we infiltrate a facility to rescue Jien. On a sort-of-related note, I can't help but picture the Benefactor/ Jien's killer as a Yahg. I have no doubt I'll be disappointed when he/ she isn't a Yahg, even if it makes no sense that he/ she would be a Yahg in the first place.
Honestly, I just want more Yahg.

1.) The quarian ark - Obviously. I want to see more of the original MW races. But more importantly, I want to see them DO stuff. I want to see walking elcor tanks using chainguns against kett. I want to see some volus setting some traps. Drell assassins, quarian machine folks with drones and such. Let me go on a badass rescue mission alongside the quarian Pathfinder. Then, let's take it down to a planet so I can see those troops fight. In the end, we kill high ranking kett, and I get the planet to explore when I'm done. Include a vault, make it the dextro golden world when I'm done.

2.) The Scourge - Finding out the truth about the Jaardan and their mysterious enemies, and finally learning ways to deal with the Scourge. Find these "opposition" folks dead, along with the Jaardan, and in the end, give us a choice: Introduce an agent to neutralize the Scourge, or attempt to weaponize it against the kett.

3.) The truth behind the Initative and the arks - To be started after you do the STG mission. Saelon gives you more data he's discovered about the benefactor. You have to comb parts of the Nexus that are still closed off, or partially spaced as a result of the Scourge. Saelon comes with you (even serves as a party member, using two tech skills and one combat) and we discover the dark truths behind the benefactor. The truth comes: Cerberus was just one aspect of it. Each of the races had people who believed Shepard about Reapers, and wanted to both escape, and run their own galaxy. So they bankrolled the Initative with the goal of running it from the shadows. You get an epic battle with them (think Raiders on crack) in order to put them down for good.