Saka would "entertain" in a Wenger team as much as Pires did if not more. I will go as far as saying that he would be impossible to contain. He is supreme. He'll have the freedom he doesn't enjoy right now but then Arteta's job is to win Arsenal trophies, not necessarily help Saka elevate individually.
The invincibles would be unbelievable if assembled in today's strength and conditioning focused era. So much has changed. I think more than anything, their collective football IQ was on another level, the telepathy they had. I don't think this team is in the same plane in that regard. We might be selling the invincibles a bit short.
For example, Rice and Partey don't come close to Vieira. It's a joke. They look great in 3 man midfield where everyone falls back and works hard. Vieira was a monster. It's a shame Wenger being from the continent didn't move to a 3 man midfield in Europe earlier than he did. He did so to protect Cesc when Vieira was gone. We would have won a CL.
