At this point I think it's somewhat obvious that Gladiator needs to be made its own spec. Blizz tried to tie a dps spec to a single talent with minimal alterations to the base prot, and its simply not going to work. Why not remove gladiator outright? At this point its been here to long and people like it to much. I myself love going gladiator both for gameplay and ascetic reasons. I would hate to see it go.
If you nerf gladiator damage to balance things around, you end up with an underpowered prot
If you buff shield charge you end up giving to much burst to gladiator
If you buff prot damage you end up giving gladiator to much
You have right now: where gladiator damage is so close to prot damage that you may as well just run prot and get the major defensive bonuses for PvP
There is simply to much going on here for gladiator to work alongside prot. It needs to be seperate from prot. That way you can take away and give skills at your leisure (like taking away a def cooldown from gladiator without taking it from prot). Gladiator can get the stuff it needs to be viable (such as mortal strike and the vers buff that fury and arms both have), so prot doesn't end up getting nerfed into oblivion for the sake of gladiator (which happened recently), it'll allow talents to be buffed against gladiator and prot rather than both at the same time (not to mention gladiator will get a lv 100 talent).
Do you think blizz will do it? Does it need to happen?