It will absolutely excacerbate Iso-flow issues. But that’s not inherently a problem - you’ll need to make real choices about who you’re going to level. If you’re not going to max them before the cover expires, sell it. Remember, not every character is going to be worth turning into a champion. I’ll use myself as an example. For background, I’m a 4* player with IMHB and JG at 270, XWolvie and Carnage at 255, and a number of others max covered at levels ranging from 166 to 245. I have all the 3*s at various levels between 127 and 166, currently I have 23 at 166. I currently have about 230k Iso - that’s actually pretty normal for me as I generally hover between 150 and 250k Iso.
Any 3* at 166 I have cover for I may as well just plain Champion - the 7500 Iso is trivial compared to the progression rewards.
I am sitting on one IMHB cover, so that’s a no-brainer too.
I have one Carnage cover that will expire in 4 days. It will cost me 60k to bring him up to 270. He’s good, but not great in PVP. I think I’m going to do it, I’ll make my mind up when I see the 4* champion rewards from IMHB.
I have four Human Torch (classic) covers, and he’s one of my 3*s at 153. That’s 30k to level to 166. I’m strongly leaning toward maxing him, again the rewards are good enough to justify the cost.
I have one Gamora cover and she’s also a 153. I think that’s a miss this time, she’d be actually cool to be able to respec at will, but I suspect I just won’t have the spare Iso for just one cover. Sorry Gammy. You’ll get your turn someday.
I have one Nick Fury cover - he’s at 166. Though leveling him would make his 4* DDQ easier, and it would be awesome to respec him (he’s at 5/4/4, I just can’t seem to find that last blue,) it would cost over 300k to max him and I just plain don’t use him enough to justify the Iso, even if I had it. Not this time, Director. I’ll level him incrementally when I can afford it, maybe next time. Maybe not, though.
I’ll get an Eletrka cover from tomorrow’s Resupply. She’s max-covered (even ideal at 5/5/3,) at level 175. Nuh-uh. I don’t have the Iso to waste on bringing her to 270. This is Natchios the champion for me, not unless I really find a use for her.
I’ll probably open my other tokens, but I think I’m going to hold off on Legendaries until I rebuild my Iso store - if KP (level 190,) or Goddess Thor (level 245) came up and I didn’t have the Iso to max them, I think I’d have some tough choices.