this is just one big strawman arguement, I play over 40s Sunday league football/ soccer. We are quite good, its complete pointless me worrying what would happen if we played Manchester united, 1) its not going to happen 2)they are 25 yo elite athletes, we are a group of old blokes that like a kickabout, the score to them would be in the many dozens, possibly hundreds. That's more or less the same,scenario you keep threatening aikidio exponents with with your MMA EXPERT
your also buying in to the myth that you can teach effective self defence skills to people with little athletic ability against a physical superior opponent, you cant . You might catch them by surprise with a punch and they run off, or you might really annoy them so the beat you up good instead of just takin ng your wallet. But either way a small weak slow guy is not going to win a fight against a big strong fast guy no matter how good their skills are. You need some physical advantage. If their stronger you need speed, but you still need to be strong enough to actual hurt them.
addressing faulty techneque isn't what most people need, its trip down the gym they need to address their physical frailties' first. My dojo has a number of folk of much higher grade than myself that I can knock over in 5seconds. There techneque is good its there strengh and speed which are lacking
I can see no real need to play street thug, it a bizarre idea that seems to have caught on, there are only a limited number of ways to attack someone, and all these are covered in normal drill sparring. Street thugs don't have unique body mechanics, they kick and punch and shove like the rest of us