Did some Cyrodiil PvP to level assault and support to 6, what a slog. Needs a major revamp imo.
I've leveled Assault to 4 on two characters via deathmatch BGs. It's been very fun for me. Nothing too serious, no one raging over losses and it's relatively quick. (getting to Rank 6 which my partner needs to do for her DPS DK will take a bit longer I'm sure but BGs are short, quick and fun so I'm okay with it :D)