As mentioned in another moves-related thread for Sword & Shield, I would definitely love to see Submission improved.
The accuracy and base power definitely need improvements. I’ll be contempt with a boost to at least 95% accuracy if the attack gets buffed to 120 BP, just like some strong recoil attacks such as Flare Blitz or Double-Edge.
If it gets such recommended buffs, Submission should be a TM move once again or as a Move Tutor attack at some point in future for better distribution among numerous Pokémon in subsequent generations after Gen I.