I would like the idea of can change the kind of skunk that u throw (by pressing a number) , a example of diferent poison can be these :

A poison that makes the worms affected to fall asleep.
The sleepy worm cant move or attack , and he wont wake up ever until it got pushed or attacked.

If you only have 1 worm and it falls asleep , a nearby explosion , drop or shout can wake up it.

A poison that can paralize a worm. The worms affected by this poison wont be able to move (they can use rope or jetpack) as if the artillery mode were on for them. They can shoot , and they will be able to move after the number of teams x3 (if there are 4 teams , the worm will be able to move after 12 turns). Collecting a health crate allows again the worms to move.

I havent tought about more kind of poisons , if someone has another idea of one , post it plz :)

This kinds of poisons can be used in Suicide bomb too.