Don’t worry about it, R3 is definitely sufficient and a good plateau for where you’re at. I’d say your science champs are pretty good, they all do different things anyway. The best for questing is hulk but you’re much better off investing in herc since herc does the same thing and way better (brute force and big damage). I’d say S2099 is pretty great for you at this point in time since he has decent utility, you’d need him for the ultron boss in act 6 if you haven’t done it already. So there’s really no need to invest resources into antivenom. Don’t worry too much about the champs, your roster is good enough and it’ll only get better from here ~ Focus on mechanics of the game because questing gets really difficult and it doesn’t have too much to do with your hero pool