Though I do miss Seal Rock with the Flames, I think adding this in 3.3 seems like a bad idea. It would be a nice addition to add in after Season One of the Feast has completed though (especially because it will be a similar game type).

The PvP community is very small in FFXIV, splitting it up only leads to unreasonable queue times. 3.35 with no GC restrictions would be a good time to release this.