This has probably been suggested before, so I apologize if I am doubling up.
I think new players are really struggling transitioning out of their 1* Iron Man, Storm, Widow/Hawkeye teams because if the increased variety and scarcity of 2* covers. It would be nice for these players to have an opportunity to gain them in the PvE prologue. As it is, they need to near-max their 1* characters to be able to finish the prologue, and when they are done they have a cover for each of Thor’s/Storm’s/Daken’s colors (correct me if I’m wrong). Plus Bagman (whatever). That doesn’t get them anywhere, because of the softcap level max on their 2* characters and the fact that their 1* characters will be a lot stronger.
In the past these much-needed 2* covers could be quickly obtained in PVP events once a player had a decent 1* team, but that has changed. With older/experienced players constantly tanking, new players are very quickly hitting a wall in PvP events where they have no hope of winning against 2* and 3* players. New 1* players probably don’t even understand the concept of tanking, plus they really don’t have the luxury of doing it themselves. If they’re lucky they can get in early and win against a couple of seed teams, but after that they’re looking at nothing but unbeatable teams.
I think new players would be much less frustrated if there were a few more 2* covers to obtain in the prologue, or if there were more PVP events they had a chance of competing in (like 1*-only events). I for one would love to see a weekly lightning round restricted to 1* characters that offered 2* covers as prizes.