I sincerely doubt they'll ever invest a great deal of attention to pvp for this game. For one particular and simple reason.

It's not a PvP focused game, the 3 main city-states are not truly against each other, they're unified for the threat of the Garlean Empire and also the Primal Threat/Ascians.

It's a PvE focused game. The only reason PvP even exists at all is because the developers know that a large amount of people who play MMOs enjoy PvP and they need to try to make as many people happy as possible. But still, it's a low priority type of thing - even if/when they release the Battleground thing, which will be large scale battles, don't expect it to rival that of like GW2 WvWvW, or anything even remotely similar on the market. GW2, etc are games which cater more to the PvP minded player base and are consistently feeding their resources into making it better and interesting. XIV is just simply not that type of game and (hopefully) never will be.