I was thinking the same thing yesterday while struggling to make good use of a Gryphon. Ideally I'd want it to follow a big ship around and lob LRM from behind it. If I order it to escort, it'll put itself in danger and die, because that's not what a Gryphon is for. If I leave it without orders, it'll wander off too far from other ships and accomplish nothing.
I think it would make things a bit clearer too. If I understand it correctly, currently carriers have different escort behavior than normal ships, essentially just like what "Support" would be. But the line between carrier and not carrier can be blurry and I'd like to be able to make the decision myself instead of wondering what "Escort" will do with this ship. Does an Odyssey count as a carrier for this purpose? I'm guessing no, but I'm not sure, and sometimes I would like to force it to - if it's heavily damaged, for example. And then there are some not carriers that would benefit from carrier-like behavior, like the Gryphon.