Hey hironakamura, thank you so much for the detailed breakdown! That is incredibly helpful.
You hit the nail on the head regarding the silhouettes. I'm going to take your advice and run a quick test placing all 64x64 icons on a pure black UI grid and squinting to see if the Tier 1 vs Tier 7 shapes are instantly recognizable without the colors.
Glad we could help each other out! I’ll definitely be keeping an eye on Gilded Dominion's progress. Best of luck with the Alpha!