Long-distance warfare isn't exactly something that the game promotes. You're not supposed to be able to march to the other end of the island, stay on station for three weeks, then march home. Nor should you be able to sit inside an enemy realm for a month or two without having to go home. That may be fun for the realm doing it, but it would totally suck for the realm being occupied. The need for the attacker to leave and refit is one of the things that lets the defender catch their breath and regroup.
We all want war. Yes, we know that's what the game is about. It's one of the things the devs keep telling the players when they ask for more ways to completely avoid warfare. But we don't not have war because we can't march across the island to fight someone on the opposite side. We have war because people are not willing to fight their neighbors. Why not? Isn't that why we have neighbors?
If you want something like this to support long-distance warfare, I would suggest starting a new thread on the general discussion board to discuss whether or not long-distance warfare would be good or bad for the game in general. If you can convince Tom that allowing realms to fight a cross-island war, then there is a greater chance of something like this being added to support it.
