Feature suggestions:
1. Kill joints - Basically Timfa's suggestion, https://itch.io/t/225619/suggestion-kill-joint
2. Obstacle mode - An option that adds immovable obstacles in the 2 modes (running and climbing, jumping already basically has its own obstacle mode)
3. Remove ability to place nodes - Only make nodes appear at the ends of bones, where they'll still keep their function, since drawing bones right away seems more straight forward than placing nodes first when from a creature designing point of view is just a nuisance.
4-6. Ability to create bone groups - Where you can select nodes and turn them into one group and then have the ability to drag, resize, copy, and paste the group of nodes(no effect on the creature evolution, just helps the design process a bit for very complex creations), and maybe the ability to change the color of bones (for aesthetic design, and also maybe to identify node groups, if they do get added) and finally an option to let the new color of the bones show up on evolution (i put too much thought into bones and nodes)
Misc:
7. Increase the scrolling speed of your help page.
8. Ability to change save names - For creature and generation saves
9. Question that asks you if you want to overwrite the save file of another creature - I've lost way too many creatures by naming them the same thing without realizing it
10. Ability to zoom out and in on the generatoins
I know these would probably be long in the future or will probably not even be needed, but here are my suggestions anyways, all in one post. What do you guys think?