Just an update: There are still no plans to come up with a plan for the Astrodome.
Today Harris County commissioners met and decided to take no action on a plan to offer a ballot issue to the public to fund bonds that would provide "millions of dollars" needed to renovate the Dome.
It's been unfit to occupy since 2009, so something has to be done. Might as well wait until the right plan comes up. No Plan is better than a Bad Plan.