Both matches currently in progress are following a format where there are:
- two fighters (or teams of fighters - first match is 2 vs. 1 while second match is 2 vs. 2)
- 2-3 announcers who make commentary before, after, and/or during the fight
- a referee
This requires 5-6 people to be involved. It's kind of difficult to get that many people together (and there is currently a shortage of announcers and referees on the roster compared to the number of fighters). And when actually working on the project, more people and greater complexity means more opportunities for bottlenecks, making these matches take a long time to complete.
But if someone started a match with, say, just two fighters (no auxiliary participants), then it would probably go a lot faster. It could also be shorter without the need for complex introductions and commentary and stuff. Kind of like this event done by TheNiceZombie a while ago which I believe was the inspiration for Fight Club in the first place.
In the end though it would depend on whether @Friendly_Sheep is okay with it. (I mean, even if he isn't okay with it you could still do an independent collaboration, it just wouldn't be part of the Fight Club series).
Hope that cleared something up