Forgive me for committing thread necromancy here, but BLOC didn't completely leave. When you have 100+ people there are usually disagreements. In this case meaning half of BLOC goes to WaW, a quarter stays here permanently, and the other quarter goes on to play both WaW and PaW. I bet the people who thought everyone from Rummyland would completely vanish are pretty sad now that the results are in.
RIP The Great Migration.