@korzhik Hey, game designer here!
First of all, wow, thanks for detailed feedback! I'll try my best to answer on some important parts
I mostly agree with your points. Although or game is about collecting in the first place, economy and short-term goal planning here is pretty mediocre
The shovel and flowers are still useful (kind of?), but their goal may either not be entirely clear or just enough. Players are still need to remove old plants and try different combinations (if they want to collect all butterfly species in a reasonable amount of time)
Yes, combinations. When game decides what butterfly to spawn, it picks random flower and looks at its neighbors, so there are some kind of combinations present (but simple enough for a jam)
Maybe I, as a GD, need to be more precise/strict when designing game systems like that and not leave all of their problems on balance/level design itself. Still don't have enough competence there, but I am definitely planning on improving my skills there, and your feedback is very useful, so hopefully on next LD I will be prepared better 😎
Thanks again!