Opinions on my current roster strategy

Warbringa

Ok my roster tracker in sig is fairly up to date with maybe some minor updates (I know I have more 2* farm covers etc). I usually only play PvE and just dabble in PvP when bored.
I currently have about 300,000 iso banked and earn between 10,000-15,000 iso per day when I play PvE competitively. I am currently in the death zone of daily supply rewards of at day 640 or so (days 600-700 completely are terrible as they still give you 3* covers at this point and bad 4* covers).

I am close to covering my first major 4* in IMHB....just need one blue which I will get from my next IM40 cover. I also have Prof X at 12 covers but I don't intend to level him due to winfinite. I have several other 4* characters between 7 and 11 covers but I anticipate it will take several months to get another a couple of them to 13. With that being said....my plan is to finish champing the two remaining 3* that I don't have champed (Spider-Man and Vision) and farm 2*. After champing 3*, I will bring my 4* up to the level of my highest 3* (currently around level 190). Should I consider champing IMHB when I get his 13th cover? I know that with so many 5* on my roster a champed IMHB wouldn't drastically hurt scaling, except in events where he is boosted....which could be every fifth or sixth event. To me that is too often for the benefit of maxing him at this point. I think I would rather invest that iso into other 4* to bring them up to a useful level on my roster and to help me win more crash DDQ tokens on the next cycle. I would appreciate others thoughts and advice on my current roster situation.

abominatrix

I am in almost exactly the same spot as you; all 40 3* champed, no 4* with 13 covers, but several of them at 10-11 except that all of them are second tier or worse except perhaps for Cho, but we'll see how he looks when the buff goes live.

I'm doing precisely what you are. Sitting on about 300K ISO, buffing essential 4* or Clash 4* to the levels of my top 3* as possible, farming the 2* and waiting. A member of my alliance has the exact same problem you have (IMHB is the only one with 13 covers and he doesn't play PVP), In the discussion, we couldn't work out if it was better to champ or wait for the same scaling concern you have, so I'll be interested in what others say. My inclination is to wait and have a collection of 4* at 180-190 when I'm ready to champ 3-4 4*, but that's a guess.

Calnexin

There's something to be said for softcapping, but if you can champ IMHB, do it. His black and blue both produce red needed for his rocketpunch. Black damages the character but gives direct AP. Blue converts green to red and gives you a couple protect tiles. If you can switch those at will, your synergy with other preferred characters will be much better. Plus he's got 38k hp boosted. Your health packs get a better bang for their buck when they're healing 30k+. Even if you don't have a cover waiting, I think it's worth the spend.

Apart from that, 2* farming is a smart play. The current max CL is only in the high 30's, and there's at least 3 more coming with better rewards. 2* farm produces a regular font of XP. It's not much on an individual basis, but since they're so common it's a guaranteed return. Cycling requires you pay a little in the aggregate, but the XP + access to better rewards makes it worth investing in.

If you have to choose between those two, invest in the 2* farm. It might be awhile before you see another IMHB cover, and when it comes you've got 14 days to gather the Iso. A robust farm contributes to huge Iso spikes and better clearance levels now.

Quebbster

Boosted Hulkbuster is a thing of beauty. There's no need to be concerned with scaling, he can handle it at max level.

madok

Plus Hulkbuster + Fist are pretty much all you would need to dabble in PvP when you want.