Shouldn't it be whatever the user wants? If they want the ship's computer, it should be that, if they want Data, it should be that.

You can want your e-scooter to be a jet ski, but you'll wind up having issues when you try to use it as one. LLMs are _really good_ at pretending to be something they aren't, but not always so good at being that thing, so you should be careful what you ask for.