Some people like myself don't organise photos into albums though.
And additionally if I wanna share an old photo on the Facebook app I can't, because Facebook only allows you to select photos from the recently added album. Same with Dropbox.
I really think it's much easier to find things based on dates but that's me. As for the FB upload, dev can't release their iOS8 updates until iOS8 is released to the public so that would be something that should be coming as you know. But you should submit a bug report for the beta if you see something that's specific to the native iOS app.