I wouldn't have thought of the starfish as cleanup crew since I read:
"its main sustenance consists of microorganisms and film algae that is invisible to the naked eye. Fromia Starfish are not considered to be good candidates for algae control problems and will likely perish in an aquarium with excessive algae problems. The algae they consume usually grows in only established and seasoned aquariums."

And I figure if I can't see the bacteria/algae/dirt I won't worry about it being cleaned off. ;)

Why does the urchin have to find a new home?
I really like mine. I have three. Two Tuxedos and one long spine.

I don't have anything really unusual but I do have huge numbers of collonista snails that are multiplying like crazy in my tank.

I also like my fighting conchs (got 2) but again not all that unusual.

Can I count my spiny oyster as water cleaner? ;) (yep I held out as long as I could and eventually got one after all)