My interest in Halo 5 notwithstanding, it's very nice to see a developer understand the importance of a game browser on PC, or any platform for that matter. There are numerous advantages to server browsers, from building communities and relationships with people you come to know, to being able to pick exactly what region, ping, map, and mode you wish to play on. It also makes it far easier to continue playing the game when the population count is no longer sufficient for matchmaking to work as intended. Matchmaking is just another one of the many repercussions that convenience has on game design.