I think it's unfair we're not allowed to sell 5* and 6* champs for CAVALIER tier rank up resources
My 5* Hulkbuster is at 180 sig and several other 5*s that are as utterly garbage as Hulkbuster has gone past 100 sig ability.
Out of the 23 6*s I am so unfortunate to have, only 2 are actually useful (CAIW and Warlock). 6 are somewhat useful for defense and the rest of my 6*s are just utterly trash (yes, I have a 6* Hulkbuster, too, have the two truly rubbish Cyclops, duped Blackbolt and Karnak, etc.)
Outside arena, almost 80% of the 6* champs in this game are just utter rubbish. So why not have the option to sell them for rank up resources. For example:
Selling a 5* R1 could get you:
500 6* shards, a full T4C, a full T4B, a few T1A
Selling a 6* R1 could get you:
2500 6* shards, 25% of a T5C (of the class of the 6*), 50% of a T5B, and one whole T2A.
This would make our rosters less depressing when we can at least get rid of useless champs to get resources we can use on the few useful ones.
I'd rather have 4 rock solid 6*s I can use as opposed to 20 6*s that's only useful in arena.