If you mean Tomorrowland Terrace and south, I agree. If you include the Lagoon and south, there's room.
The biz model I think the accountants get behind is losing two functioning attractions (Autopia, Subs), one of which is expensive to maintain supposedly, and an underutilized building (Launch Bay) and fit three new LL level attractions: a very new ride system (Cars system, different theme, in my example), Frozen boat, Frozen coaster (or other IP).
While I don't think they'll fix TL up without a new Tomorrowland E-ticket, I absolutely could be wrong, they did it in 1983 in Fantasyland, but that was a different era. And I guess they did it with Avenger's Campus since Web Slingers is...[digression terminated

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