It would be nice to see a Desperate Blows-style group 2 merit category for swordplay. Even just a little haste on it would be a vast improvement. Combined with AF increasing the acc/eva on it, group 1 merits reducing recast, and a relic piece increasing the duration.

Also as a group 2 I can see us getting a trait that gives MAB for lunge, or just a direct % damage increase per merit.

The other group 2 categories will likely be entirely new JAs, so what SE has in store for them, I have no idea.