^^^Agree with some of what you say, but it is extremely hard to get the wrist of a good boxer to execute your koto gaeshi. Most people today will throw 1s and 2s, all straight lines. Most people aren't looking to grab your lapel, collar, wrist. Most good state level wreslter will hit a double and dump you on your head.
I got my purple in Aikido before I convinced by parents to let me take judo instead. I studied at a reputed school and wasn't able to pull off my techniques against large, resisting polynesians that were trying to punch me in the face, or tackle me. So personal experience led me elsewhere.
There still aren't ANY successful aikidokas fighting in any NHB/MMA/Vale Tudo fights. I could pull off a tai otoshi, though.