Entire armies being able to jump from one side of the map to another by just smoking pipestuff is just entirely broken.
The challenging part of tw to be able to attack the province is good on paper. Omnipresence on the global map is just a terrible side-effect.
Eve online has something similar when jumping provinces, but has a lot of stuff to counter abuses.
There is a jump fatigue notion too, but nothing like pipestuff to smoke it to 0 in a couple minutes.
There's something deeply wrong in allowing a few abusers to turn godmode on. People want to raid? Sure. Let them get into their boat, and do that the viking way. Not that TW abuse.