Pausing the game
Along with save/restore game options, this is something always seen in RTS games, specially useful when it is an important match and one of the players has go away for a few minutes.
What works in the other games I know is:
anybody can pause the game
anybody can resume the game
*the number of pauses (and/or the time) you can make in one game is limited.
Sounds messy, but it just works.
For worms you would need it to be only possible between turns. Could probably work as an extension of the hot-seat time triggered by a chat command.
Pause should remove actual game view from the screen to prevent from using pause as additional pondering time. It should be short – up to 3 minutes – but longer pause should be possible if both players agree on its duration.
It would be neat if you could 'pause' it at the end of your turn, but the other players could take their turns and the pause would kick in at the start of your next go. If it was a really important match you'd probably not want it to do that because you'd miss out on information, but it would be handy for casual play.
This is much needed. All my 3 are belong to this.