Hmm,if ideas are still being accepted I got something:
When the tournament date is set and all that,how about some experienced mapper/mappers take the time to create a map specifically for like the semi finals and the final match,the map won't be submitted until the tourney reaches it's end. My reasoning for this is that if maps are created just for the finals,and revealed not long before that,then the match will be based purely on skill,instead of maybe "Yeeah,I played this map 1534621 times,I got this!" while the other guy has played it like twice. Both players will have to sightread it,and the one who has the overall better skill should come out as the winner. I know it might be a silly idea but w/e xD