Can we change the direction of the supertanker that is WotC? Probably not, but there are an awful lot of adventure writers on this board publishing on DMs Guild and elsewhere and perhaps these criticisms of WotCs efforts might make them think differently about how they present their adventures, rather than following in WotC's footsteps? Heck perhaps there's a whole untapped opportunity here? The new Paizo or Kobold press about to spring forth...
Well, if I get through to anybody, then I just want to bang the drum that first and foremost,
your book is a tool. Yes, nice typesetting, engaging text, and attractive art are part of it. But there's a reason actual reference books have copious superscripts, footnotes, insets, and references in the text. Those things make the book easier to use. The experience of your adventure happens at the table, and
bad organization and jumbled layout do far more to harm a game than an attractive, color picture of a drow warmaiden that only the DM sees does to help it.
I ran Temple of Elemental Evil in 5e for years, and it's kind of shocking how we've regressed in some ways. I've seen modern adventures that have no readable text for the dungeon rooms, the first paragraph containing far too much compromising information to just be read out loud, meaning I have to scan 3 paragraphs (most of it not useful) to tease an ad-hoc description out. If Gary Gygax did a better job organizing a text than you did, you need to get religion or something. It's really freaking boring read, and there aren't a lot of pictures. But, you know what, the map key is easy to read, and the room descriptions largely are fine. I threw crap together in the Air Node on the fly (party ended up there WAY too early) with the chickenscratch Gygax (or Mentzer?) left for me more easily than I do running some modern WotC adventures with beautiful plates and paragraphs of prose.
I don't know what to say to people who say they can't include references, insets, tables, and the like in order to "have more room for content." This to me is like saying you didn't put seats in the car in order to make more room for the stereo equipment.