Atomic bomb
Cluster greande that let's out gas
Rocks (you throw them at worms lolz)
Katayna (sword)
Machine gun (more powerful than uzi's)
More sucide attacks (for example starburst from Worms 4)
Weapon designer for WWP and WA. Also how about a mission maker for WA?

Ps: My avatar and my sig was changed not by me, do you know what happened?

Well the atomic bomb is already there as the indian nuclear test
I liked the idea of machine guns though, next to the minigun I suppose

Maybe more animal based weaons like a monkey bomb that can clime up walls that the sheep wouldnt clear?
More transport weapons than just the jetpack teleport and ninja rope?
cant think of any transport ones right now though.

For transportion, how about a zip line? and for weapons, how about a grenade that fires out shrapnel in random directions. the shrapnel would be able to go through thin walls, like girders, and hit the worms on the other side, the shrapnel would also nock the worms around. Its kinda like a cluster bomb, except that the shrapnel doesn't explode, but insted, fizzles away after a short amout of time.

I like the monkey bomb. And the the nukes in WA and WWP make the water go up, and I was thinking of like a bomb with the mushroom cloud, you get it? I will add monkey bomb and zipline to the list with your names.

Lolz!!!!!!

How about ballista or giant laser or trebuchet (:)) like in WFUS?

Also, how about a wormlauncher, which can send worms on big distances and then he will land on parachute:D