Funny you should say that! I'm presenting a panel at Otakon next month called "The Neuroscience of Sword Art Online." I was impressed with things that Kawahara never really thought about such as the lack of focus in peripheral vision (similar to how our eyes have to be constantly moving so we get light reflected into our corneas). While he brushes aside the impact of preventing signals being sent to peripheral nerves (basically causing them to rot), he has a good set-up designed.
<-Neuroscience doctoral student (likely graduating next December due to a long project)
As for the latter, I had plenty of laughs on my own about the "Gary-Stu" complaints. It doesn't bother me a 1/10th as much as it does some people here.
I'd actually be interested in reading this once you've given your presentation. If you're willing, please share this after the fact.
All that being said, all the concepts you mention are things perhaps brought up by SAO (or really any show with a focus on VR) but the show I felt did little to no service to those concepts not did it explore them with any depth (how could it, it was too busy dick riding Kirito among other things ). If the concepts themselves inspired you to do more research related to your field and the work you were already doing than that is certainly cool and I'm happy if some net good can come out of the show (I'm being sincere here). However, at no point during the show did I feel Kawahara was able or interested in giving those concepts their due diligence.