Thanks @Warbringa and @heybub, I ended up dropping Sandman, Miles, Venon, Ant-Man and Jean Grey. None of which I use and so few on covers to make a difference. For me I want no 2* or 3* cover I get go to waste. I will roster and champ all of them because the rewards from them far outweigh the cost of ownership IMO.
@macgawel, keeping only 3 2*s is a HUGE HUGE HUGE mistake. I can't stress that enough. You will miss out more from this game by NOT having all of the 2*s and 3*s rostered then you will gain by having only a handful and loading up on 4*s that you can't use effectively. The point of having all of the 2*s is for the daily rewards that you get from them, it's called "farming". Use them, champ them, max them and then start the process over again. The rewards you get from the 2*s will feed into your building up of 3*s and the 3*s will feed into your 4*s.
You should have most every 2* in your roster and champed before you champ a 3*, and I feel the same way about the 3*s before champing a 4*.
macgawel said: The point is, you only need 3 2* for the DDQ. And you need a (different) 2* every day, for the Behemoth.So, I keep my Enchilada team (Storm+Magneto+ x). And I've a slot for the daily 2*.OK, I don't farm 2* and lose rewards. But I gain 9 slots.If used for 3*, that's some more DDQ Behemoth Burrito (give 1 taco), 1/5 of "Dat Required Character" (give 1 taco and 3* cover), and 1/5 of essentials 3* for PVE. And rewards once champed.What's best ? (serious question, I'm too lazy to make the maths )
2*s are the foundation, 3*s are the framework, 4*s and 5*s are all of the extra good stuff you want to have some real fun.