We had a signature match, but TWG "copied" the name.
It was called "Ultimate Survival" and it was a Fatal Four Way Elimination Last Man Standing Match, where four wrestlers started the match and, after two were eliminated, the two remaining wrestlers would have to climb a ladder and retrieve the Championship.
We have a championship (the Armageddon Gladiator Championship) that is won and defended only in LMS matches (or the Ultimate Survival).
Also we had the M.A.D. match, but it was a little too "extreme", since it ended with an atomic bomb destroying the whole place.
But I like your idea, I think we can do something about it!