I recently have had a poor string of useless Legendary Tokens. I think we have all gone through it and disgustedly sold that IW cover or that MrF cover.
Do I despise the idea of a maxed MrFantastic? No I don’t, but there are other places for me to be spending my ISO that trump him.
Given the cost of leveling 4* characters we constantly have this situation and the result is always selling the cover. I would much prefer that I could take that cover, and instead of selling it, apply it as a level on the character instead. It would be a major net positive in terms of ISO return, and it would get people to start leveling and using characters like Elektra and yes, even Cho.
It would seem that champing has already provided a blueprint for this. One cover = one level. You just have an ISO pay gate at the pre-champ max.