By puzzles that take advantage of 3D, you don't mean box puzzles, right?
Not that I really minded them, but to most people they still cause nightmares.
I don't know what I think about the idea of a remake. On one hand I am really curious to see what The Dig would look like in 3D, but on other hand I feel like acting like a raving purist with "Oh noes! A remake would like totally ruin the glory of the original!!1" attitude...
Nah, bring it on. It wouldn't hurt.