I personally would like to see more game play options for the avid AL pvp customers. There are so many great ways that STS could improve this aspect of the game.
For starters:

1) Better interactive maps. Imagine taking Rooks Nest (as an example) with two starting points one on each end of the map with the objective of taking and holding check points. You could further increase the difficulty of this by adding non-player characters that need to be defeated in order to take these points.

2) PVP specific rewards like armor, weapons, and pets that can be purchased with points earned during matches.

3) 1v1, 2v2, 3v3, rooms. This would allow for faster game play. STS could put restrictions on these room like, non mythic/arcane rooms ect....

These are just a few ideas but my point is this area of the game could be SOOOO much better!