As an undead warlock (single boxing) the horde nearly always lost the AVs. The alliance always rushes with 25+ ppl through and simply caps the towers on the run. Since the main strategy was by then simply defending with 15 ppl and attacking with about 20, we couldn't do anything against that. The defenders were overrun and the attackers could barely break through.
Then ppl slowly started posting a strategy macro. At first there were MANY doubter. But as soon as they realized, that the defending strategy simply won't work anymore, we won again. Rushing through with 20 ppl without hesitation, 10 killing balinda, 10 capping the ally towers. After killing balinda the 10 ppl started recapping our towers. It was awesome to see, 30+ allys standing in our base, having destroyed the towers and taken the GY and unable to kill drek cause of 2 masters by his side. By now the alliance started making a bigger defense - our rush simply collapses on their bridge. By that time it's simply about, who is faster? Ally at killing drek with 2 masters or horde breaking through their defense. The ally had the advantage, until I had the idea of porting back with 1-2 healers and stay with drek. Fearing the waiting alliances into drek, spamming SoC - we won even though we were about 100 points in disadvantage, since we could only destroy one ally tower. 2h BG, yeah... It was fun.

But why I'm saying that? Simply to subscribe the idea with the tactical macro. At first it won't work, but then you start succeeding. The only thing you have to keep in mind is, that it deponds from pool to pool how your macro has to look. Ours is by now looks like that:

1 & 2 Group: North & South
3 Group: Icewing
4 Group: Stone
5 & 6 Group: Balinda
7 & 8 Group: GYs