With you on the rest, but I don't think Universal or anyone else has interest in the main SWO park, other than to strip mine it for Sesame Street IP and possibly the coasters. It's a 1-day park stuck between two soon-to-be 3-to-4-day parks, when the average stay in town is 5 nights. Universal doesn't need a fourth park, and nobody else can hope to take away day visits from the two big boys with just SWO. Yeah, you could make it a steel park, but that's going to be a sizeable investment on top of the park itself. Throw in the bad rep for the orca shows, even the brand itself is of dubious value.
I do think Discovery Cove and maybe even Aquatica survive owned by someone, perhaps a traditional amusement park company but maybe even the Busch family.