Ah, missed this post somehow. You do realize that by the time Alliance "sacked" (which they obviously did not) Orgrimmar, the stark majority of the Horde was right there with them doing the same thing? Because at that point the conflict changed from Alliance versus Horde to Alliance and Vol'jin's part of the Horde vs Garrosh, who was no longer the leader of the other group (because he literally kicked them out)? Where both the Alliance and Vol'jin's part of the Horde were victors?
And yes, holdings in Lordaeron that'd allow them to keep one of the strongest Horde factions in check is super useless. Never mind that it'd allow them to get a starting position to get a foothold in Gilneas. You know, one of those "their own kingdoms" you mentioned that Alliance supposedly reinforced their foothold on. And they didn't get Ashenvale back because they haven't lost it in the first place. The factions were locked in a stalemate in that zone.
Glorious, glorious victory for the Alliance you got there.
The Goblins are stripmining Azshara obviously for shit and giggles and not resources, because that's all they are about. Then there's the non-existent lumber Tyrande herself mentions when talking about giving the zone to the Horde. Silly Tyrande, talking about things that don't exist, all because she doesn't have a clue about the land she governed for ten thousand years.