Some of these the answer was meh, but many of these would be great.
I love the variable recharge on IM40. Only other change I would make to that is recharge stunning IM40 as the countdowns are played (and shortening the CD to match).
What I think when I hear of recharge : Ironman is beat up but takes a minute to reboot and gather power then leaps back up ready to fire.
What actually happens when you use recharge:
~Batteries at full, system shutting down~
Tony wakes back up, “hey what happened?”
“It was awesome. Those batteries on your back started glowing but you were out of it so Steve grabbed a red one and a blue one strapped them to his shield and threw it at Sentry. Dude couldn’t even stand up for a minute Cap hit him that hard. But seriously Tony are you done napping and actually going to help out today??”