I'd rather them make PK tourneys rather than GSTs. Think about it, why just use a sword when you can toss bushes, bombs, shoot arrows, horse blast, etc? They could have PK arenas which would be like spar arenas except the size of a guild spar but could have trees, bushes, snow for shoveling, cliffs and all sorts of twists and turns to make the match more interesting. Free for all matches could be interesting too.