so Quillbot is quite new to me. Its an AI paraphrasing tool which works pretty well.
They also offer quite cheap Premium Plans + a quite expensive API (compared to lets say Deepl API pricing). Maybe there is a way to integrate Quillbot (free, premium, API, whatever) as a rewrite service into GSA, as its AI powered and working pretty good.
Maybe also there is a way to go around the API when you have a premium account at Quillbot and to integrate this into GSA.
Just wanted to suggest this service, maybe you already heard from it. Thanks and keep up the good work!