Heya! Many thanks for your super interesting feedback - and glad you liked the game ;)
I completely agree with most of your points, and a lot of those were mostly because I didn't have the time during the game jam ^^ (in particular: yup the scale balancing animation is kinda weird and I'm frustrated too that the UI sometimes blocks "large" levels :D)
About the last level broken stat - I didn't run into this case but I'll admit I didn't have the time to stress-test this one as I much as I wanted, so you've probably hit a bizarre bug I missed; thanks for pointing it out, I'll try to see if I can fix this in the (near-ish) future ;)
Oh and I was actually wondering if in-game notes could be useful - interesting to see you thought about it as well, maybe this means this toold needs to be there...!
And on your last note about the future of the project: I honestly don't know how much work I'll put in this project now, I do feel like there could be some extra stuff with pre-placed unlocked animals, that you can therefore remove to completely rechange the balance... but other than that, it's true I don't see other big "reveals" in gameplay here :p