While relatively trivial overall due to the nature of Freezing being near-universal, especially in relation to utilizing Cold Evaporation in Endless mode, I do think a small tweak to the Freeze debuff icon would be useful in situations where there are multiple Freezing towers in close proximity and/or a nearby Cold Fire Flamethrower to quickly monitor the number of active Cold Evaporation debuffs active on certain enemies as opposed to which enemies are still taking the normal amount of damage. While this clarification is unnecessary for the Poison tower since its stacking Poison debuff and Chain Reaction debuffs are strictly separate debuffs, since this additional debuff is built into the Freeze debuff but remains integrated into the debuff itself, the case is slightly different. Its separation into an entirely different debuff could be considered but may affect overall visual clarity, whilst leaving the Freeze debuff icon in its current state makes it more difficult in some cases to identify how much (if any) extra damage an enemy should be taking due to Cold Evaporation. My recommendation would be to tweak the hue of the Freeze debuff to be darker for when Cold Evaporation instances are active and leaving the other renditions of the Freeze debuff at the present hue.

I do apologize for the flurry of recommendations, but figured they may help with improving game health. Thanks for the many hours over the years the game has entertained me for.