They are too damn easy. Either make them puzzling or don't waste my time.
^ That.
These "
Rotate the stones to the correct combo" are not puzzles, they are a time-sink and belong in the past. Example: I enter a room with 4 stones in it. The first thing that comes to mind is "click 2^4 times" and go click 1,test,1,2,test,1,2,3,test,1,2,3,4,test and repeat until solved = That is not a puzzle.
A puzzle makes you use your head and think creatively/logically. Remember the door on level 2 in
DungeonMaster?
http://www.youtube.com/watch?v=rM661IxflGg Watch from 7:55 to 8:10.
You can argue the same about that puzzle, but the fact is that in the video, it is solved differently than i did it back on the Amiga in the 90's - however, both solutions work.