I think it's important to remember that the WotC that saved D&D from TSR no longer exists.
That WotC was run by Peter Adkison and was its own company.
The WotC of today is a subsidiary of Hasbro.
The WotC run by Peter Adkison gets kudos, but the subsidiary of Hasbro has become a very, very poor custodian of the brand (as evidenced by the OP). Had Hasbro not taken over, I think WotC today would look very similar to how Paizo has turned out to be.
I don't think D&D will ever thrive again (as it once did) under the auspices of Hasbro. It will take a smaller company where D&D is special, not just another brand that needs to make huge profits to justify its existence.