Nah you defo need pace.
Your CBS need pace so they can press high, compress the play, leave space in behind them and get back if needed.
Your FBs/WBs absolutely must have pace in the modern game, to camp in the opposition half and be able to get back and basically run their side of the pitch.
Forward players need pace to get ahead of defenders, to move teams around the pitch and obviously to get in behind.
It's an absolute pre-requisite for me. No coincidence Guardiola has bought a load of speed merchants in different positions, and it has unlocked their style and allowed the playmakers De Bruyne and Silva to run the game from the middle.