You do understand that attempting to use real world logic in your argument about an aspect of a fantasy game automatically makes it null and void, right? If not, I'll be glad to tell you why as well as explain to you why swords, axes, bows, etc. wouldn't work.
Crossbows don't use arrows so I'm afraid your argument is invalid.
this late in production, they're not going to add anything at all. it's just testing and refining of what's already there.
and they have more important things to do than add crossbows
Like what? Release the game with a thousand game breaking bugs and never release any patches to fix it? Yeah, that sounds about right.