I don’t think that it’s fully indoors (ThemeParx mentioned that there looks to be an outdoor portion) but I think you’re right on the money with the coaster.
My only worry is the capacity, and that can be fixed with breaks during show scenes.
Hmmm, could the inverted coaster return to Orlando in the near future? Only time will tell.
It's not like inverts have left Orlando (glares at LEGOLand).
__
Either way, it seems someone did some keying and we may have a better layout now of what came out from Themeparx (but keep in mind, it's probably not final).
From what it seems (be prepared for temp names I'm giving)...
Hollywood - 1 ride (guess), 2 ??? venues (excluding Music Plaza), 6 Dining/Shopping Areas
Minion Lagoon (DM) - 2 rides, one ??? venue, 5 Dining/Shopping Areas
Cybertron (TF) - 3 rides, one ??? Venue, 5 Dining/Shopping Areas
Ancient China (KFP) - 2/3 rides, 7 Dining/Shopping Areas
Hogsmeade - 2 rides, Ollivanders, 4 Dining/Shopping Areas
WaterWorld - Waterworld, one Dining Area
Jurassic World - 2 rides, 2 ??? venues, 5 Dining/Shopping Areas
Counting by the numbers, it seems like for Attractions (going by USH logic), USB will have possibly 20-22 Attractions at launch.
So if that's the case, it's on a similar ballpark to what UOSouth's first park might turn out in attraction count.