have the default version and the gladiator version both costing honour.
If by this you mean the "elite" 2200+ required versions... no. No no no no. Those should remain unavailable. There's a reason those have rating requirements - they're supposed to prize trophies for top players.
...but no other gear in the game is like this. Even Tier 3 made a come-back, and that was the only PVE gear set that has been removed (ignoring the fact that updated versions have existed since Wrath's launch). Besides, PVP already has exclusive rewards - the Gladiator titles and mounts. Why, exactly, does every single player above 2200 deserve an exclusive one-time reward?
Honestly, I wouldn't mind if outdated Elite 2200+ gear retained both Conquest and Rating requirements, just as long as they were still available.