I like pvp. It's not much fun right now because I play about 8 games and then run into immovable objects that I'm never going to beat with my current roster, but I guess that's always going to be the way in this game
If you play PvP real heavily I'd go the route TPF Alexis recommended and soft-cap your threes to stay in-line with your twos. You can do this for a while, but there's only so many 14th covers you can stomach losing because you don't have a fully-covered 3-star champed.If you don't play PvP or just dabble, there's no reason to soft-cap anyone for PvE. Just start champing them.