I'm fairly new here, mostly just doing the puzzles for the past few weeks (many many hundreds of them). The puzzles are currently mostly to get a piece (or good exchange) or to force a mate.
It would be nice to have puzzles for defending. Something where the other player is about to make a really good move that's subtle and you have to do something special to save yourself. It might be defending against a potential pin or fork, or something that would lead to mate, or even when it looks like you're down, but you can force yourself into a drawn position with accurate playing.
I feel like I'm learning a lot of great offense from the puzzles, but would like to improve my defense as well.