Return of Reckoning

Is there any reason why some objects (most notably unattackable NPCs and various gates) block target cycling? Its really annoying in orvr and i dont think it serves any purpose, and quite often becomes an issue in places like HP tavern or praag manor, to list the places i remember the best. Is is perhaps complicated to change that, so that target cycling just treats them as normal enemies? Or perhaps make it skip those altogether, as i dont think theres any reason to actually target any of those elements in PvP?