More people pointing out that he's describing the suburbs that he hasn't replied to yet:
Mueller does fit a lot of what wants, what with it having retail, houses, and green space in the middle of the city (it's on the spot on a former airport) but not "3000+ homes" on 15-30 acres (which is, as one person points out, 100 homes to an acre, not realistic). Something closer to 25 homes to an acre would be doable, but a tight fit. Mueller is quite large, with 300 acres (that includes the large H-E-B with parking lot).
Do you know what can fit a lot of units pretty tightly, has green space, amenities, generally safe enough to walk around in,
and something people would willingly pay for?
A good apartment complex. Sadly, the Fair Housing Act has basically made it impossible to actually verify if the tenants can actually get along. With the exception of 65+ communities, you can't have stuff like singles apartments anymore, and with not being able to tailor things to the community, you only have some stock amenities that may or may not be able to be used.
In previous times, even in the 1970s, the singles apartments had a clubhouse that often had parties and events for the young adults who lived there (possibly even open to the public as an operational business). And of course, evictions didn't take months and months to happen back then either.
The crazy part is that most of what he really wants can be achieved, but not without changing the laws that gives landlords more power, and such a thing is antithetical to the existence of these people.
I'd like to share an article with you, "Sex as Athletics in the Singles Complex", an article in the "Saturday Review" and was once briefly mentioned in one of the Houston newspapers where residents in the 1980s swear this was all exaggerated and didn't actually happen. Sadly I can't find the place where I found it anymore because the only place that had it was Unz.org and if it's still there it's been blackholed by the search engines.