PvP seems like it's pretty ***, sorry, but it is.
Revives take a soul crystal, and take forever to do. When you cannot revive, you have to go all the way back to another fort and run all the way back to the battle with a horse, by time it's almost over. The solution the Devs gave are forward camps, but those cost money.
If healers could actually revive people, there were cheaper ways to keep your troops close to the battle when they respawn, and mana didn't run out so fast, PVP would probably be my favorite part of the game. Buuuuuuuut, nope.
My suggestion: Make the outer things around keeps, like farms and such, have respawn points. This would make PVP awesome.
Will spawn points closer to keeps (without costing money) ever exist?