It’s a shame downvotes are turned off.

Missing lots of features. Proton does not prioritize Linux at all

Have you tried Skiff? It will be listed on PG soon, and ticks all the boxes.

I advice anyone against switching for now, especially if you’re using KeePass or Bitwarden. Proton Pass has just been released, meaning it is not audited and it’s immature. I would not trust it with my passwords just yet.