well basically you are just creating a new scheme, this scheme has nothing to do with the worms2 roper scheme except that its a nice way of marketing your scheme. You could call it different but yeh, that's about it.
For people that are not used to worms2 here you got a link of the main league, there is not much left but yeh, u can take a look into the rules/scheme of the current w2 roper and how its been played. Link:
www.igl.net/worms2rBut I more noticed that avi is more complaining about the way you will lose a roper because you can get those hard crates. I think creating a new scheme isnt the solution for all of this. I'm more thinking of some group of players who select which maps for TUS are 'allowed' to play on. This way you might get a database with hunderds of map. people who wanna pick a map which isn't allowed yet could simply post it. So u could select a maximum difficulty for the maps. ofcourse there still should be maps with crates which are like 'piew, I need a good run for that' but that's because they are still possible but I agree that we should skip the mission impossible maps. (Tho, I dont see a lot of players play on them). That's kinda all what came up my mind. Maybe its an idea.