Thanks again to TonyC for another heads up, this time for Boiling Noodles in West Covina, which appears to have opened up earlier this month. Boiling Noodles is a variation on the mini hot pot, with all the selections in the form of noodle soup. There are about ten choices, half with vermicelli (e.g. curry fishball noodle), half with standard Hong Kong thin egg noodles (e.g., siu mai noodle). I had the chicken siu mai noodle pot, and it was very tasty.
Reiterating the sentiment expressed by TonyC, for those who complain about having to drive to Monterey Park or San Gabriel to get your Chinese food fix, enjoy the drive while you can, because in a few years you might need to drive to West Covina or Walnut instead.