the relievable crewmembers mod kinda works, but you can't call a replacement crewman to take over the station once you relieve an officer. nor can you use that station anymore.
but it seems to be usefull when you want to get rid of Saffi. 8)
as for using the AI to control the ship, it might be possible. you kinda do that already when you let Felix target and fire.
if you mean controlling the ship to complete missions and fights, it sounds a bit complicated (very hard, TBH) but not impossible.