Transition between stages is *way* too slow! You wait forever for the dude to finally come out of the elevator. Then you wait forever for the dude to go up the elevator once you complete a stage.
Also the fade-in fade-out takes even longer than that!
Suggestion -- remove the fade-in fade-out "special effect" entirely and find a way to make the elevators not so unreasonably slow!
It's always a shame when fairly simple games are slow and/or laggy when there's really no reason they should be.