Something that I believe will greatly help out those who only want to pvp and would get rid of pvp queues forever, would be to make the pvp map a permanent one.
Where you can port into whenever you want with your group and it having constant objectives spawn, or the tower being held was held until they were taken from you and have the points tally up every week or whatever.

I haven't fully thought the idea out considering I'm on my phone and at worm but the idea is roughly like the GW2 pvp maps I guess (never played gw2 but I know their pvp maps are similar)
If any pvpers have ideas to add to it go ahead but I feel like this sort of revamp would definitely add to the ffxiv pvp scene and with some work could make it one of the better pvp scenes.