I was just thinking that after you hit rank ten on your nations city you can get a quest that allows you to upgrade your city ring you recieved at level 1 (or w/e rank it is to get it if you didnt start in your natural city) to get enchanted with a city teleport.
This came about as i was thinking therer really isn't a direct warp right back to your city outside of books (which really isnt a direct warp) and the VW warp (which is kinda useless if your out in the field anyways.)
I figured the quest could be a little challenging. or involve all three nations in the quest. or both!
as for the enchant? teleport to (insert name of city on ring here) 1/1 0:30 (20hr cd) or (2hr cd)
I figure the CD could be fair either way. i mean i'm only looking for an item i can use occasionally that's convienient not something to make traveling anywhere obsolete because you can just go to your home nation at anytime.
Could also upgrade the stats if you wanted to. or introduce random augments that are useless for combat.
like Increase movement speed in (city) by 5%
or Increases chance of multiple crystal drops but makes it impossible to farm clusters
While in (city) refresh+3 regen+5
these are just some ideas.... i figured i'd throw it out there for SE to take it and make it their own.. but the important thing is the city teleport!