....yes because it is much more space wasted. They said they will be playing around with elevation which you can see in the concept art. TSI + ROA as a whole can fit maybe 900 (2 circuits of 450 people each boat for Riverboat which is VERY generous) and the Island which let's just say a raft leaves every 5 minutes of 50 people to be SUPER generous, goes MAYBE 600 an hour, at absolute best. For 12-14 acres of space. that is ABYSMAL. That is less than Jungle Cruise, Space Mountain, Haunted Mansion, Pirates, Little Mermaid, Small World, Seven Dwarves (realistically), Soaring, Mission Space, JII, Living with the Land, Nemo, Spaceship Earth, RNRC, ToT, TSMM, Star Tours, Smugglers Run, MMRR, Everest, Kali, Dinosaur, TTBAB, FOP. All of those rides do MUCH better than TSI/ROA with 1/20 of the space each.
The proposed idea would be to take the 14 total acres, divide between 2 lands with 2 attractions each, MINIMUM.
Comparison:
Radiator Springs (1500 per hour, by itself beats TSI + riverboat)
Mator's (similar flat ride theorized 600 per hour)
Villian's Coaster
Everest/SDD (1620 or 1296, we know its a coaster but it's hard to find an exact match so I would go Everest or SDD)
Pirates-like Boat Ride (currently speculated, could be a simple flat ride but I doubt it so I'm going to use a more medium capacity boat ride, 2340)
So this same plot of land is at a lower estimate, supposed to support 5,736 people per hour ON JUST ATTRACTIONS, not even talking about dining or shops. The higher estimate is 6,060 people per hour, still not counting the shops or dining or extra walkable areas.
That is an increase of roughly 282.4% in capacity for this land and you're trying to claim it would be a waste of space? Even half of that would be a massive improvement.