I'm excited for this, I personally prefer the 2D worms games anyway.
i've always only played 2d worms games, i'm not sure if the 3d ones are better.
In 3D it's near impossible to aim anything, and the controls for every single 3D version seem to vary in some way or another. In 2D it's much nicer, and more fun.
The 2d versions are only fun on tablets. On the PC it's all weird use WASD to fire.
The best thing about the 3D games is that actual environments were able to be created instead of just a deformed chunk of land.