PVP Materia, Food, Economy, & More
Currently the majority of materia and food used during PVP seems to be non-PVP items.
Materia:
It would be nice to have a wider variety of PVP materia available through Wolf Marks instead of having to rely on PVE materia prices. Wider variety as in PVP versions of the PVE materia, since "Materia effects active during PvP only" anyway.
This would encourage people to PvP more* to get their gear fully melded. PvP more* = better queues. This would impact the economy, but I'm not sure by how much since PvPers seem to be a minority.
Food:
For food, we once again rely on PVE food most times and do not even receive an EXP benefit from using it.
The duration of food is mostly wasted while waiting in Queue. Would it be possible to have PVP food that does have a PvP EXP benefit and shorter duration? Shorter duration so that instead of crafting 1 unit, it creates 5 or 6 (or more!!! :P) since each game is relatively short most times.
Perhaps for Frontlines, games will be longer so different foods with longer duration?
Other ideas:
Pets! Mounts! Bardings! Furniture! Achievements! Glamour items. Titles. Ranking system.
I'm sure many of these things are already coming though, and I'm definitely looking forward to it.
*"PvP more" alternatively "Victory Exchange" more...but that's life.