This is what happened to my guild. We started on Stalagg Alliance which was like 40/60 A/H at launch. Shortly after the Honor system launched (pre-BGs) it quickly snowballed to like 5/95 A/H. It was a pain in the dick to level, groups of Horde were camping like 95% of the world map hungry for Honor. I ended up doing 57-60 killing those ghosts in the caves under Kharazan, which I think was the last "safe" place to kill stuff outdoors because the zoomers didn't know about it. We (note: not my casual ass) raided for a bit but it was stupid having to use 2-3 raid groups to clear the path so the one with world buffs could enter. Also the AH was completely barren which sucked bad.
Guild eventually decided to transfer to Incendius, which was like 48/52 A/H at the time. There were a few resident Horde guilds griefing the MC/BWL entrance every night so we decided to camp them back. Note that my guild was pretty sweaty and autistic and used shit like mass sappers, multiple attack squads, attack vectors, and other funny shit like that. We took over the mountain for 3 or 4 nights and the Horde guilds started to transfer off. This snowballed of course to like 90/10 A/H by the time I quit. It was basically an Alliance PvE server where you might get ganked once a week by one of the three Horde rogues left. This got boring.
After I quit the guild transferred to Benediction, which was also fairly balanced at the time. I didn't follow the hijinks there but looking at the stats now it's 99/1 A/H. Sounds about right.
Anyways, SoD looks like it could be fun to play. If there's a forum guild for Alliance PvE somewhere I'll probably hop in.