After May 2020 patch (or April 2020), it's very hard to get S rank/great epics/champs, on the other hand the number of repeated (less useful) champs are very high. (this is a reminder)

I have too many same champs in inventory, for example I have 6 Coldhearts (wow), 2 Zargala, 2 MM, 2 Tayrel, 2 Gorgorab, 2 Jareg, etc. all in use. Problem is they are used in different ways due to Mastery setup, one better for Arena, one better for CB, one better for Dungeons, etc.

How can I distinguish Coldheart 1,2,3,4,5,6, MM 1 # MM2, Tayrel A # Tayrel B for different use ? Should Plarium allow players to mark champs with color (for example a small triangle with changable color on top right of avatar) ?