I don't think anyone was being overly critical, I think it's natural to question the reality of good ideas. If someone mentions a Marvel park, its hard not to say "Good idea...but it can't happen."
There's lots and lots of options for what they could do with Star Wars. If Disney was really concerned about Universal drawing away their business, they would be fast-tracking something. Since they are not, it tells me that they are still not concerned even with Harry Potter around.
Since people are throwing out ideas, and the mention of hotels close to DHS, what about a Star Wars themed hotel? A value, but with diferent themed areas. Tatooine, Hoth, Endor and the Death Star.
In the Death Star section you could get people to pay to stay in the detention wing with small cramped rooms with metal tables for beds and no windows, advertize "Sleep like a Princess - Princess Leia!". The play area would just be a dumpster and they could call it the "trash compactor".
Oooh, and the Hoth section the beds could be themed as dead Tauntauns. As you are tucking your kids in you realize "Whew, I thought they smelled bad on the outside!" (You think I'm joking ->
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