It'll be interesting if they really run with it. Tony's not well-liked in Marvel at this point in the continuity (not that he's gotten more popular since), but he's either running or is the power behind so many operations that there's a lot that'd start falling apart without him. And for all his flaws, he brings down all that on himself because he wants to do the right thing.

So, especially if he actually takes a bullet for Steve (ohpleaseohplease), it could be interesting to play with all that, and to see a hero essentially martyred and barely mourned. And then there's the angle that he's been self-destructive for a long time, and this is kind of like suicide without the guilt.