It might be unlikely to happen but it would make the most sense of Disney with any acquisition at this point, at least in terms of major ones. It's not expanding them into a new space, nor is it too much of a risk.
And the reason why I said content catalog only is because of a potential government issue - even though I think with a democrat in office, it is something more likely to happen than Trump or especially DeSantis. I think the antitrust issue is overblown anyway, as WB is not one of the big three in the US and any merger is unlikely to forestall in international markets unlike a deal for parts of Sony or other potential dealings. Even then, I don't think Disney would keep the linear TV networks, because they really have no use for them. Most of the reality based networks simply don't fit in with the current Disney catalog, cartoon network directly competes, and CNN is something I don't think Disney would want to own with a 30-foot pole worth of separation... Unlike that, the content catalog, especially in a theoretical Max merger, is something useful for Disney.
Given Disney is nowhere close to using what they already have, as you noted, but much of the fox catalog is not exactly what you would call Disney spec, particularly a lot of their live action content that I would love to see on D+ or Hulu someday but we never will.
I'd love to see a deal for OLC, just for their folks to be able to take over park management domestically, but if it didn't happen during the pandemic it's not going to happen for a number of years, if ever.