I would see where you could be right, but theres some problems with what your saying..
As stated numerous times by IU Staff and even when closed, it was said that the replacement would be Food/Retail/Entertainment. So if you told me that its theres going to be a coffee shop (which "could" and "should" be pointless due to Hollywood Grill) and retail shops, i'd have reservations. Coupled with the fact that it has been stated, a few times by insiders that there'd be an Entertainment venue of some-sort in there, able to possibly even hold a Horror Nights maze, it'd also be a problem.
Then you also have to consider this, the left side of the building is abnormally taller than the right half. And also to add, it seemed that from what it looks like in recent photos, there doesn't seem to be a larger door for the public side of the building facing Universal Plaza but only smaller ways to get in.
Now Hollywood and Dine being the Hollywood Grill Replacer though..it'd make sense to me, due to the fact that it'd make sense better in a theme aspect to keep you feeling that your in the front area.
Not saying your wrong, but there's some portions where you retconned it at-least in my point-of-view here. I'd love to be proven wrong though.