Once you have soft capped IBGY, send one hunter (preferably NE) to drop a frost trap at cave entrance. He should have entrapment talented.
This staggers the hordes next spawn by keeping them slowed on mounting, entrapment rng keeps them from being able to run in as a group due to its RNG nature and buys you time to send a few mages and. A healer there. Turn the entrance into a meat grinder.
The hunter should be frost trapping (pulls gaurds to trigger trap or let’s horde hit it, either works), FD shadow meld in a spot horde won’t see you, and repeat every Rez cycle that is safe to do so until your meat grinder shows up.
The frost trap delays the horde by an additional few seconds each time and staggers them with entrapment so they are running in in small groups instead of in mass. If you want the hunter can also have an owl for aoe combat tag, send it in to prevent mounting for a few seconds, hunter FD invis potions, gnomish cloaking device, exc. And shadow meld in a random spot to stay alive there to keep up the harassment. The hunter can do this every Rez cycle as it will still have the hunter having time to Rez pet and send it back in next cycle (unless horde waste time looking for hunter, but that’s also good for the IBGY soft cap timer)
The hunters job is simply to waste their time. It might not seem like much but let’s assume the GY got a max Rez of 20. The hunter delays all 20 by 5 seconds. That’s 100 seconds worth of delay collectively and if it staggers their approach to IBGY to be easier to pick them off, that’s good for alliance as well.
I did this some of my games as a NE hunter back in vanilla, and it helps. (Other games I was on tower defense at the bridge for the sneakies). I didn’t get out on eagle eye duty more than a few games as I didn’t have the macros set up for it (the rare game I was the only hunter that understood what eagle eye duty was).
I never lead AV teams on vanilla, but I knew my role as a hunter decently back then, and it amazes me how some of what was done back then isn’t even being tried in today’s AVs by alliance.
I guess I’ve always just been more into the guerrilla tactics of delay/distract or be the watcher (I preferred being offense team over being the bridge watcher).
But hay, I want to face alliance that actually try in AV, it’s much more fun.