I think the TTC's biggest problem is that it has no theme besides "logistics" - it has concrete and steel, but no Disney magic.
With Disney running out of buildable land, imagine them plopping a resort *at* the TTC, and renovating the TTC per that resort's theme (effectively integrating it into the resort). This would be a pain to construct while keeping the monorails running, but I like throwing crazy ideas out there.
I heard that all the MK resorts are loosely based on a different MK land (Poly = Adventureland, GF = Fantasyland, Contemporary = Tomorrowland, WL = Frontierland). This would make the TTC Resort themed after Main Street USA, Liberty Square, or (ahem) Cars.