text: Title: [FEA] pylance/pyright
  Body: **Is your feature request related to a problem? Please describe.**
  MyPy is frustratingly slow, it'd be great to try something supposedly faster like pylance/pyright
  
  Depending on success, we may want to move to that for dev and only run mypy for ci
  
  To get started, just some sort of bin script, and a round of basic fix attempts, would go far!
  
  