Sure. I didn’t catch this for a good while on beta, as it’s a consequence of one of the other changes. Specifically, it has to do with the design implications of the new Adventure Board.
With current snotstone events, a good chunk of players often use defense teams that are either designed to intentionally lose for a number of reasons. With the implementation of the Adventure Board, there will no longer be a need (or benefit) to do this, as those types of events will no longer exist. Thus, the indirect PvP change is the removal of incentives to use these types of teams moving forward. That said, there’s no penalty running these types of teams post-4.4… yet.
When the PvP rehaul comes, there will likely by design be no viable reason to run anything but a legitimate defense team. If normal PvP does indeed become bracketed, running anything other then your very best defense team is going to be a very poor decision.