It come to my attention playerbase not happy with may things. When I analyze complaints I see recurrent themes that is AI make dumb decision and predictable. This complaint littered on steam reviews especially.
So I think it is time a level of difficulty is introduced. Player choose their level. Hard difficulty is when Ai make smartest decisions such that not always taking skulls smash. Or example notice that moving particular gem result in 3 match of another color as well. Or even Ai go for lethal kill over a color match etc. Of course reward should escalate to level difficulty. Current Ai decision can remain as ‘average’ difficulty.
This to implement on top of choosing team based off defense value such is already the way to chose. Please consider.