That is AWESOME. I'm sure searching is one of the least praised feature that takes some of the most work for this sort of system, just bast on my experience even doing joins on large CENTRALIZED datas...
You are dead on as far as i can tell. Im not nearly as credentialled as either of you, but ive been working on what im sure is a comparatively primitive search and the asynchronicity of it all makes it so hard to get the best results at the top quickly.