If your server controls a keep in WvW, you should have access to a skritt tunnel system designed for that specific keep to allow faster travel to the center of the map.
This would probably result in more large battles in the center of each BL , but would also give an immediate reward for owning a keep, instead of only the delayed waypoint…
There could also be a smaller skritt tunnel system based at each servers starter waypoint in each BL to get servers into the battles more quickly, too
– The Baconnaire