As Trufflemeep said in my Bamboo idea he wanted to see more about the nature skill tree.I will explain some of my ideas!

Squirell-For 3 seconds the squirell will make an undynamic path of acorns which leads to the cheese(Would be good for use in places where the cheese is near)(Acorns evaporate after 5-6 seconds)

Tree-Will plant a tree that is walljumpable and it grows up to 3 cm.

Ladybug/ladybugs(1-5)-You can spawn ladybug(s) which mice can ride on.They last for 5 seconds.(If you have 1 point for it you can spawn 1 ladybug if you have 2 points for it you can spawn 2 ladybugs e.t.c)

Paraleaf-It isn a bit like a balloon but it goes down not up.You can attach it to mice if there is a unknown long fall eg. if there is something that looks like a bottomless pit paraleaf down.(If you fall too fast the paraleaf will come off)

I will add some more on later!

e:And ofcourse the bamboo too!

Reminds me of this super awesome image

Few things I'd like to point out:
I don't quite understand the squirrel skill. How is it used?

Tree skill - If it's placed in a small space will it still grow? Could it cause players to get stuck between the tree and a roof? Does it last forever and if so what if you cut access to a part of the map you need?

Ladybug skill - Can the mice control the direction the ladybug flies? Do they actually ride them or just sit on them like bubbles? How many people can ride a ladybug?

Paraleaf skill - Sounds like it probably won't be used much. If you can attach it to mice, how would you make the mouse go down if they're standing on something?

I thought of a skill which would be pretty nice. Like a blade of grass or a stem that you could plant and it would grow and then mice are capable or pushing it and it falls over. Like a bridge of some sort! ^_^

Another could be the ability to place water droplets that act as water!

/Half Support

I really like the idea, but the acorns could cheat in a few maps and maybe not work at all.

EDIT: Agreed to what Hixed said VVV

ahhhhh i like this!!
but if they add this, they better add the other elements Xan linked to!

No Squirrels, TFM has had bad experience with damned Squirrels.

/Support
< < amazong ideas.

/half support
I would love to see this, however like everyone else you could fix a few of them. Can't wait for the other ideas you have for this cute little nature skills. c: <3