I dunno...it seems more work to me to have to shift?
Have you tried sprinkling baking soda on the bottom (then pour the litter ontop)? This really helps from it sticking to the bottom.
What brand of cat litter are you using? It seems if wet is getting left behind often, it's not clumping very good..I have the same experience as Susanm9006 when I try to scoop: often the wet clumps break up and leaves crumbled pieces that are hard to get out. That little basket seems to keep the clumps all in one piece...95% of the time anyway.
Have you tried sprinkling baking soda on the bottom (then pour the litter ontop)? This really helps from it sticking to the bottom.