Just a random thought based on some things other folks have said in other threads:
Would it bother you if the D&D core books did not include high level information. By "high" here I mean 11+ or 13+. So your PHB, MM and DMG would not concern themselves with play at those higher levels, and you would have to buy a single volume of high level character options, rules, items and monsters. Would that work for you? Would it be desirable? Would you like to see high level stuff removed from the "core" game since "no one plays high level"? Or do you think adventures and supplementary material should emphasize high level play more? Or is it pretty much good where it is at?