A suggestion: allow players to retrieve clovers from the museum for inserting into breeders so that they can try to produce specific varieties in order to fill up gaps in the museum.
I quite enjoyed this game even if it is a bit repetetive. I've more or less completed it (survival levels aside), but I'm missing quite a few achievements:
No. 6 (I'm assuming maybe 100 battles?)
Nos. 27-37 (between Lethal Strike 4 & Sprinter)
Nos. 48 & 49 (between Murderer 3 & Shoper)
Nos. 56 & 57 (between Artif 2 & Fans 1)
Anyone got any of these?
 "Five-Leaf Clover"){kind=icon}
 "Idle Evolution"){kind=icon}
 "The Great Massacre"){kind=icon}
 "Block Bomber"){kind=icon}