In response to the recent test update and the post by Kander I re-copied my 2 toons over again.
I 2 boxed thru the quest line leading up to the X2 access quest. There were between 12-18 people in LS most of the time. Even with the increased spawn rates I still spent a good deal of time waiting on spawns. Ocassionally would see other players killing the void mobs also, but mainly just me. So while the spawn rate will help I do not think it will "fix" the zone for live.
If the zone instances at 50 people this still wont help. If the 50 people were scattered through out the zone it would be fine for the size of this zone, however everyone for the most part(70s-80s) will be concentrated at the docks and skull cave/void areas. That would easily put 20-25 players fighting for the same mobs in a very very small game area.
Just populating the other side of the docks with void mobs may be enough. I am sure it may be difficult to add in land mass but if you want to keep the areas seperated then you need to add more land to the "void side" of the docks.
Thanks!