No it wouldn't, he can be slave, same as Beast, Mystique.
He needs more time on screen, Archangel is really cool character and he's Apocalypse's horseman. He has to be in one of next movies, where Apocalypse is main villain since now. So I don't see anything weird in that.
A lot of time if they were going to be going for a story like this. That's why they should have brought the character back for DOFP. Flesh out the character some. Make the audeince start to care about Angel(because TLS sure didn't).