wow! thank you so muc for your kind words!
I tooootaly agree with you about tree species and leaf shapes, I'd really like to make it into a full game where you can perform techniques as graft some branches into a different tree, or getting new seeds from crossing species. I hope some day I have the time to work it out :)
by the way, if you didn't know this before, I'm sure you are going to like it, this is where I got the whole idea and the patterns for the trees :)
https://www.cgjennings.ca/articles/l-systems/