How about mask the assignee with the account manager - so to the client it looks like it is assigned to their account manager, but in reality it is somebody else internal to the company assigned and getting it done!

I vote for this

Use case: we want clients to add tasks/comments etc. but we want to hide the individual dev's information as that's not really relevant to them and it's our internal detail on how we manage the workload

Felipe Soares: Exact!!

Idem for me!!!!

This function will be a option to avoid bad conduct of customers to directly contact teams and broke contractual rules.