That’s a good question. Ultimately, I don’t think it, or any other options, were seriously considered after Anna had her grand idea of the Gabba as a signing bonus (and the IOC needed some heavy re-assurance to accept that). It basically got lost in the sugar rush of securing the games and then starting to think bigger after the fact.
Over on SSC, the convos about Albion seem to figure around guessing about transport, it being on a floodplain and zoning issues.