I do not have many hours in WvW, but this is what I have generally gathered: Firebrand and Scourge are still major outliers in terms of support and damage in large groups, respectively. Scourge was actually made stronger post-patch due to increased targets on shades. The ideal meta, IMO, is one where those outliers are toned down and classes used less often like elementalists, mesmers, and rangers found a more stable place in all aspects of WvW. Currently an ideal group consists mostly of scourges and firebrands to back them up. Other classes are largely seen as a liability. While all classes, for the most part, have a build that has a role in WvW, most classes really only have one role that they play. For example, Rangers are almost always Soulbeasts and almost always roamers. There's no reasonably spot for, say, a Druid healer in a large group. The problem with saying anything on balance is that a LOT of it is predicated on the current best practice of getting as many people as possible and swarming opponents. Power in GW2 scales incredibly with numbers. In big group fights, everything dies instantly. But you all can't balance based on that because then 1v1s on the roads will literally never reach a conclusion unless one of the people keels over IRL from sitting at the computer for too long. So my ideal world might not be best implemented until we see what fallout comes from the updates to rewards that disincentivizes grouping into huge groups.