We only want to remove yeast to satisfy our local water district. They don't have science behind it, they just don't want us dumping yeast. Right now we rack and that works ok, just messy, hard to deal with, and the slurry left over still has some liquid which could be distilled. If we can find a better method of removing yeast (before or after distillation) I feel we can get better yields and have an easier byproduct to deal with.
For now this is our only issue, however, with expansion our water co will likely not let us dump anything putting us much closer to your situation.