There's been a ton of comments, so i'm going to make mine short. Credibility: Roaming in WvW since 2013, solo roaming exclusively since HoT killed the scene. Come back for 1-2 months/yr. Exclusively play power shatter. Big ol Charr in a hat. I would heavily council that you ignore roaming when it comes to balancing WvW. Roaming is a very delicate thing and exceptionally difficult to balance as, historically, it has relied upon a healthy WvW population and healthy sPvP balance. Roaming is a result of a healthy environment, it's not going to cause one. Similarly, I would ignore people discussing 1v1 (perma-stealth thief/boonbeast/etc) as WvW really shouldn't care about those builds. They'll either die to 10 people or run away and not be effective. Even at their most effective (inside keeps trolling with perma stealth), they are simply support and won't get anything done without a zerg to back 'em up. I love roaming and would love to see groups of 3-10 zooming around the map again, causing problems for zergs and being actual havoc squads. The current meta and health doesn't support that. But I wouldn't concern myself with it, roaming is one of the most organic things in the game, it's health relies on external factors. Focus on ZvZ and overall map health first!