See, this is the most hilarious thing and what proves all of your "logic" falls apart, you're saying that Suguha's plot became a "vanilla fest", this is the biggest LMAO thing ever, it shows you're someone who thinks "Any girl around the MC being fucked by random man = NTR" and "any girl doing it with the MC = vanilla". Beyond how laughable that is in general, and extra-so for SAO in general and Suguha in specific, there is NOTHING even remotely vanilla in what Suguha is doing with Kirito at all, if anything is actually almost as NTR as what Inoda is doing minus the fact that she actually does love Kazuto XD
Pfft, good one
Exactly, Suguha is corrupting Kirito more than any other thing that's been happening in this game around him, hilariously enough, beyond how unique and new it was there is NOTHING vanilla on her actions at all, she's been raping him, sabotaging his relationship, and even filming him with cameras we now know are also somehow equipped with knockout gas...in another universe, she could be a better NTR MC than Inoda is XD