The incremental search level depth is a nice feature but there are times when I want to search way deep in one shot. I know the search might take a while but in these cases I would let it run and come back to it later. It would still be quicker than clicking 'Search Deeper several times. I also noticed that Search Deeper starts again from a few higher levels and then deeper. This might contribute to even longer multiple searches instead of one single deep search unless the deep search would behave the same way.
Customer support service by UserEcho