I got this idea from a post of @crimson basalt
The overall power stat has no point being there
So it should be like this:
Top left : health
Bottom left : defense
Top right : attack
Bottom right: critical
Top middle : omega power
And every illuvial should have a power number representing the overall power making it easier to differentiate one from another
Stage 3 illuvials should be able to increase their stats so we can grind our illuvial to increase its stat instead of relying on luck and gamble