If you read their full blog posts, you can see that the algorithm is fine tuned to match you with friends, guildies, and people of your own server. That is, if one slot is remaining, and there are three people, the process would look like this:
- Player 1, is in a guild with 13 people on the map, and on 5 of their friends lists.
- Player 2, is not in a shard guild, but on the home world of the majority of the player.
- Player 3, is in a guild with 12 people, on 5 of their friends lists, and on the same home server as most people.
It will also destroy the identity of servers that the players have formed since released. This is also a slap to the face amongst PVErs. They paid and waited for that server overnight just to get in and now, it's wasted.
As I said before, that underpopulated issue is more of a server problem. It wouldn't really solve anything because people would rather karma train in WvW/Queensdale/LS than doing it the old fashion way.