This obviously already exists in the worms coding, otherwise there wouldn't be official missions. What would be great now is giving us the option to create missions like those. Besides the fun of it, imagine that it could be great as a teaching tool.
Consider making it possible to use .png files.
Support for user-made missions is already planned. Like I said in your previous suggestion, a GUI for interactively creating missions will not be provided for us.
sounds like a duplicate of this:
Seem to be a duplicate of this: