Who has completed a low-ems playthrough?

You will lose about 300 war assets sabotaging the genophage with Wrex n charge, and if you choose to not disarm the bomb on Turchanka, you lose 250 war assets.

The number of assets from the quarians will be based on if you completed everything there is to do for the quarians, save Koris, side with Gerrell etc and what you chose to do on Legions loyalty mission in ME2, if it was completed.

I wouldn't say that. If your readiness is at 50%, it wouldn't be hard to have ems low enough. 

I voted no. I feel like I'd have to skip half the game in order to have war assets that low. Even in my non-import game I didn't have low ems.

Speed run... minimum number of missions.

What was your time?

I should have really said "sort of a speed run."  I was meaning that I did as little as I thought was possible in the game, but I would still let all the cutscenes and dialogue run and I did sometimes reload and redo missions if things were going badly for me combat-wise.  I like to play on higher difficulties, but I'm not always up to the task at hand.  One of the 'issues" I had was a lack of experience points because I didn't have an import bonus and wasn't doing the side missions and DLC that also give the character more experience.  In the end, I had to dial down the difficulty just to get through the banshees on earth.  That made it a disappointing run for me... not one I'll be trying to repeat anytime soon, I think.

I think you're right  that the major determinant for Total War Assets is how much of the game you decide to complete; but I think it's fair to reward the players who do more of the game by unlocking the additional endings and leaving the decisions part to determining other things along the away like whether or not you can settle the geth/quarian war being somewhat dependent on whether or not you decided to save Admiral Koris (not just whether or not you did the quest) or saving the Virmire Survivor being somewhat dependent on how you treated them on Mars and whether or not you gave them the gift in the hospital in order to extend that conversation beyond hi/bye.

While its true that parts of the game have to be ignored. It all depends on what the payer chooses to do in that playthrough to have their ems low enough. Lets say the player chooses to sabatoge the genophage, and let the bomb go boom, with Wrex in charge. Its possible the player may have 0 krogan assets when heading to Earth. Look at the councilor being killed during the coup. If the player has Kirrahe die in ME1, or starts playing ME2 first, and doesn't recruit Thane, the councilor will die. The player doesn't know that Thane would protect the councilor in ME3. He's also not required in ME2 for all to survive the suicide mission. Look at another situation. Instead of rescuing Koris, the player chooses to save the crew. On top of that ignores the geth server mission. He/she chooses the quarians who give, not many, war assets. When heading to Earth, the player has 1700 war assets at 50% readiness. 

Take the above scenario, except the payer has 100% readiness. The player gets the breath scene. Someone can say the player made bad decisions, if that's what someone wants to call them, but the player can have all endings available just like someone who collected all assets

Look at low ems control. Put aside that the relays explode, the SR2 is stuck on the unkown planet, both squadmates are killed by Harbinger, the galaxy is still rebuilt, though it will take a bit longer.

The way ems was handled in the game was crap. The game proves that it doesn't matter what the player chooses to do in their playthrough. It only matters what ems the player has. The game doesn't care what the player did. Even the catalyst doesn't care. It looks at the ems board to know what choices to offer Shepard.

As far as gaining salarian support? What about it? If you like, I can cure the genophage and still get low ems. I know, I've done it. excellent.

I can't bring myself to do that....yet

I'm sure there's a lot of people who say the same. I've read a few posts from folks who say they don't have the stomach to do a playthrough like the one in my signature.