Something I would like to see implemented is a staging ground for WvW similar to what the mist offers for spvp. Same number of players from each world would be able to access the zone from anywhere. Move the world completion points to here and use the overflow system so all that want to get in may do so. Here and only here may one queue for the borderlands, same as in spvp. Can also do contested pve event chains, access underground puzzles etc, and some open warfare among the servers that would not affect the point system that is already in place. Move gear vendors here as well and out of the borderlands. And, of course the siege vendors, mystic forges, stat resets, test dummies, and so forth can be found here as well.
Looking forward, as people finish off world completion and story quests and want a break from dungeons or normal pve, they will look to spvp and wvw to fill their time. Queue times will only get longer until something can be done. This staging ground along with actually fixing the queue would go a long way into easing some of the frustration we face on a daily basis.