Since I used to practice Wing Tsun(Dynamic Ving Tchun) I really would think it should be interesting to watch an episode of this quite widely spread martial arts form. There are quite a lot of schools or systems within the branch of Wing Tsun. The spelling vary a bit, but it's generally the same concept consistently still no matter which branch you finally choose.
The one that I think should be most interesting to watch in a future episode is the system developed(or refined maybe) by Emin Boztepe. The system he represents is
EBMAS and has it's foundation in Wing Tsun, but he has to my knowledge added some techniques to make the system more realistic. I'm not so familiar with his system in particular, but the videos and testimonials I have taken part of seems at least interesting enough to make an episode out of.
In UFC's "childhood" I remember that Boztepe openly challenged one of the Gracies to an open fight, but as I remember Boztepe didn't really approve of the UFC rules. Or maybe he just didn't want to risk anything in case he got a whopping...In early UFC there where quite a lot of participants(maybe wannabes if you will) who practiced various exotic styles and heavily overestimated their capacity and therefore took quite a beating against the wrestlers, boxers, BJJ-guys and the street/bar fighters. It would be interesting to see what Jimmie and Doug think and how they would estimate the WT-system as a possible foundation or base for further training for participating in for instance UFC or Pride compared to other styles and systems after 5 days training with for instance Boztepe or maybe
Leung Ting (even though I belive that the traditional WT is a bit to much focused on forms and chi sau rather than plain fighting to be a possible effective base for MMA, but's that only my humble opinion).
But, this suggestion depends on if there's going to be a second season of course. I haven't read so much in this forum so I maybe have missed out on some information. I do think the show is worth a sequel. At least one more season containing some styles overseen...
All the best!
// Sidekick_Bob