I wouldn't say "never". But, as of now we have no plans to return. For us, it's hard enough to squeeze in everything else we want to do at WDW on a single trip. We "can" do MK & AK in a day each, but that's rope drop to close for both. There's some things we haven't tried at MK & things we would gladly do on multiple days t AK, so realistically, that's 4 days. EPCOT cannot be done in 1 day in our family, so now we're at 6 days. And we need at least a each water park, so now we're at 8+ days. And now we're getting into max vacation duration for us, not to mention budgetary concerns with a trip that long. We didn't hate DHS overall, but there honestly just wasn't a single thing we enjoyed enough to want to go back unless we just had unlimited time & budget. Plus, some of the things we did like are going away.
So no, I can't say there's no circumstances under which we'd ever return. It's just hard right now to imagine enough improvement to warrant skipping a second day at some other park we enjoy so much more.