I remember hearing a rumor in the early 2000s that he was going to remake The Wizard of Oz.
A Tim Burton Alice in Wonderland was the most obvious idea in the world, it could have been cool had he done it in the 80s or 90s though.
Burton's visual style was cool when it was actual physical things, intricate sets, models, stop motion animation, costumes, when most of that stuff became CGI it just became totally soulless.
The only time CGI really worked in a Tim Burton movie was Mars Attacks, but the CG in that had a very stop motion feel (and I believe was originally meant to be stop motion) and there were still sets and locations and things, it wasn't all filmed on a big green screen sound stage.
Mars Attacks is not a great movie but it's still far better than most of what came later.
It was still preferable to what we have now, but yeah, that cynicism often sucked, I think of the horrendous, horrendous live action Cat In The Hat movie for another example.