Naxx chant does not make the item soulbound, tho you can't use on soulbound items. BoE only.
Trade glitch was fixed long ago, in retail. As far as I know it hasn't worked on any private servers either if they're running the final cores of the expansion. (tested multiple 2.4/2.5 servers over years)
Ogri'la and Skyguard aren't in game yet. They will be released at a later phase.