This is kind of what I wanted to avoid.
I'd like to know where and how my FMA training fits into MMA, not how it would compare in an all-out fight. MMA is as level a playing field as we can get for people of different MA backgrounds to test their skills. It almost goes without saying that no matter what a person's base art may be, they still need exposure to striking, grappling, and athletic conditioning if they actually want to survive an MMA match. My original question was in trying to figure out how to fit what I've learned into the MMA game. So far, I've found the angling and footwork, entries and reversals to carry over well. However, that's no excuse for me to not brush-up/improve/learn the skills needed in the game.
As for the rules, if I wanted to throw them out the window, I may as well bring a stick or a blade into the ring... lol. Seriously, for whatever limitations those rules bring to whatever arts, I think they're there for the benefit of keeping the athletes safe. We've seen what happens to boxers when they're pushed to the limit and the ref lets it go.
I think your pain tolerance/exposure is pretty high when you bring FMA into a MMA setting. Getting hit by a stick in FMA really puts striking/getting hit into perspective. Personally, I think it gives you a leg up in how you defend yourself.
A lot of the destructions I've seen in FMA drills translate very well into MMA. Instead of a knife thrust into someone's midsection, it's a nice shot into the kidney or liver. Clinch in the FMAs seems more fluid that the sparse Greco I've trained in MMA so I take the FMA route and look for openings, advantages from that.
However, I highly suggest that some of those FMA -> MMA drills be drilled light, tight, and above all else: alive. You'll start seeing the functionality of your FMA game and take that into the ring with you.
In all, I think it's a mindset. FMA, like a lot of other combat TMAs places the practitioner in an elevated state of aggressiveness. It's not a fear state, but an awareness that says "Hey, I'm in peril, so I'm going to do something about it." Lots of MMA fanboys never get that. They hang in the gym for a few sessions, realize that getting hit in the face (even lightly) isn't their cup of tea, and leave because they can't deal with that contact to their bodies and ego...
Now, take that into MMA, and take the survivability concerns out of the equation because it is a sport, and you have all this time to think about how to best subdue, and submit your opponent.
The same can be said the other way around. Take a MMA practitioner and introduce live stickfighting into that person's game, and I'm pretty sure that his SD/MMA game will skyrocket.
Like I said before, a coupling of FMA and MMA is nothing but a good thing in terms of athleticism, and attitude towards combat.