I am so hesitant to buy a cover right now because of what happened to you with Steve (myself am leaning towards CMags purple, but know that the nerf hammer will hit him the second I do), but of those 3, with the people that you already use, Hood would be a perfect fit. Patch uses the same colors as Thor, and Marvel uses 2 of those and black, which BP uses. While Hood also uses those colors, he steals them too, which let's you build up your powers faster. If you're running him with BP and have two defense grid countdowns out, run Intimidation once and you basically have 2 awesome defense tiles. I sold a couple Hood covers way back when I was just trying to get to the 2* level, and I regret that decision.
I jumped in very late on the Sentry event, and finished 18th in my bracket to add 2 more Captain Marvel covers, for a total of 5. For the PvE, I leveled her up, and after boosts, she's at level 153. Not bad for someone I just picked up over the weekend.