I don't consider ToH to be "traps/puzzles".Tomb of Horrors was very popular, and it was *full* of traps and puzzles.
Tomb of Horror can be boiled down to this: "Flip a coin. Tails? You die. Heads? You move to the next flip. Flip a coin..."
ToH would be the quintessential "Save or Die", but you don't even get saves with many of those things, you just Die.
I'd like 4e to never do "Oh, you touched the wrong thing? Hand me your character sheet."