As a point of reference, I've mostly been running the build below for the last several months. It has very good damage output, lots of cc, good mobility and escape, and is effective in a broad range of wvw situations. There's a reason you find a lot of warriors running a similar config in wvw....
GS/H Roamer
So matt wants me to at least carry Battle Standard to pick him up when he falls down

With already two points into Tactics for the banner trait, I figured I should also put in another couple points to trait that wonderful support tool that is the warrior warhorn, which led to the following two builds:
Banner Bruiser
Banner Buddy
Neither of the banner builds have the damage, mobility, and control output of the Roamer build, but they do have way more support. In addition to the party buff from the Pack runes that all three share, the Banner builds also give the party:
- 170 precision and ferocity (switchable to best suit the party comp)
- Rez for downed via Battle Standard
- Perma swiftness
- Good vigor uptime
- 2 condi conversions on decent cool downs
- Clear of movement impairing conditions every 12s or so
If running Banner Bruiser, the idea would be to mostly stay with the hammer unless condis needed clearing or we wanted to coordinate a burst and my hammer control skills were on cool down. By using the hammer, by personal damage would still be very high (usually around 2-3k per auto attack) and I'd have lots of control.
If running Banner Buddy, the idea would be to stay on sword/warhorn most of the time, which would have me tooting the horn more often for greater party support, but would cut down my personal damage output and control skills by a lot. I'd still be useful for setting up party bursts through the immobilize from Flurry and (less so) Pin Down, but I wouldn't be contributing as much pressure. I could spend my time seeking out opportunities to land big Final Thrust hits for 9k though....

What the Buddy build does bring is permanent regen for the party (about 120 health/s), and then (I suppose) a path to party might via the fire field on the bow + blast finishers. In truth, the bow could easily be switched for hammer for control and damage or greatsword for mobility and damage, depending on the situation. All three have there own advantages, but none of them are optimized in this build.
Any thoughts on the above? Am I better off with the Roamer build? Should I stay high pressure and just suck up a 4min cool down on Battle Standard? Any changes you think I should make to any of them? Should I just pack it in and go shout heal with Battle Standard?

In terms of gear I have to work with: two sets of zerk armour (pack runes, strength runes), one set of soldiers with soldier runes, all weapons in zerk, and condi armour plus condi bow and swords.