I am not a D&D-only kind of guy - I play and run lots of other games. So, I don't need D&D to be my personal cup of tea at any given moment. My considerations, then, are not about meeting my personal desires of rules, setting, or adventure content.
When I consider the RPG hobby as a whole, I think the existence of a "Big Fish" in the market is a natural and beneficial element. I am not personally invested in that Big Fish being D&D, but I don't mind that D&D is in that role. I think it would be bad for the hobby as a whole for D&D to suddenly collapse - if there's to be a new Big Fish, we players would be better off if that transition is based on us players migrating to something we like better over some business failure on the part of the owner of the IP leading to the D&D brand suddenly leaving the market.
So, as I consider such a transition, maintaining the popularity and business success is a major concern - I don't care if shareholders are profiting via rising stocks, but it matters if loads of people are buying and playing the game.
We've been told that there's a limit on the speed with which the Anniversary books can come out, not on the side of design and creativity, but in printing - the print runs expected to meet desire overwhelm printing capacity!
That means D&D ought to be bought by someone who has the capability of managing extremely large projects successfully.
Baldur's Gate 3 is a massive hit. While it doesn't seem to have been a major financial success, I found Honor Among Thieves to be highly entertaining, and I'm glad it got made, and would like to see future attempts.
That means D&D ought to be bought by someone who can manage licensing deals aiming at revenue on the order of hundreds of millions of dollars.
Virtual tabletop play has been a boon for the hobby, and isn't going away. Digital delivery of game content is a huge vale to players. The third party market is a similar value, and boondoggles like last year's OGL fiasco do the game harm.
That means that D&D ought to be bought by someone who is tech-savvy, understands the broader marketplace that supports D&D, is willing to stay with some form of open license, and willing to slowly update licensing and/or technical capabilities to support digital and 3rd party realities.
D&D seems to have benefitted from the massive playtest efforts in recent core rules releases.
That means that D&D ought to be bought by someone open to design partly driven by community opinion, and community feedback in general.
I don't know of any current players in the space who meet these requirements.