Got a great idea for a new Sorrow Peak puzzle, although I haven't implemented it yet. The old puzzle involves pushing black and white blocks around to write numbers in binary -- the numbers you're supposed to write are written on walls elsewhere in Sorrow Peak. Okay enough puzzle, but hopeless if you don't have both the clues and a bit tedious if you do have them. I'll make that one optional, move it off to the side so that it gates something less important, while the puzzle blocking the way to the end of the area won't require wandering all over the map looking for clues.
Might do something similar with the Underpath puzzle, which has an even worse "wander all over the map looking for clues" thing going on, but I haven't decided yet.