Keep ranking 4* Champs, or leave them at 4/40?
Got a 3rd mutant t4cc. Short while back I decreed that I would not take any more 4* champs to rank 5; felt it's a waste of t4cc given that you now NEED 5* champs for endgame content. So, my question is, do I bail on my decree and take one of these 4*'s to rank 5, or do like I said and wait until I pull a decent mutant 5* champ?
Wolverine - sig 47
x23 - sig 99
Iceman - sig 1
All currently at 4/40.