damn your lazyIn my opinion, the only way to make portals being removed from Dalaran/Shattrath even remotely acceptable, is to fix the taxi system in general.
Mounts are going to be 310% speed in general, so why are the in game taxis this slow when they fly a path 150 times more convaluted than the worst tour guide ever.
Make flight paths move around 500% - 750% speed, and stop circling around the departure and arrival points(and any points in between).
In one of the earlier beta builds when paladins were REALLY bugged, you moved at what I would assume to be around 500%. I thought to myself, this is what all flying should be. It was awesome. But, it still got old pretty fast, having to fly from one end of the continent to the other... SUCKS. Which makes the other half of my prerequisites to make removing portals acceptable, is to have at least 1 portal hub per continent near the middle of the continent. (ex. Portals in SW / Theramore / Dalaran / Shattrath that only go to the other hubs, so you still have to fly from one point to another on the continent you're on, but not have to wait for some stupid boat to get to the other continents.)