I think this is some great news. I think Mercer and Woll are both great GMs who I'd listen to about what they think on gaming issues. I'm going to be honest, though, and say that I have no idea who the people writing the core DMG even are in 2024. Back when the last books came out, I did at least know who the consultants were. And I'm thinking of the Captain Jack Sparrow joke that even though they were controversial to say the least, I did know who they were. And that knowing who was involved with the game stretches back through 4E and really back to the very first book.
I'm sure lots of Enworlders know who's involved with the new books but this is literally the first time since Gary and Dave wrote the books that I have no idea who's involved.
So for me, seeing Mercer and Woll's name says "oh, some people who have interesting things to say and I've heard of. Cool beans."