If you have so many parts in such a small area, you run in to the situation that you don't have enough actual surface to do any work with. If 3 slots makes it work properly, 30 slots won't make it work better but it might reduce the lift/turning force you're trying to get (because the lift force acts on the surface, not the gap).
There is also the issue that as the parts get smaller, they become inherently less stiff meaning you risk oscillations with attendant unstable flows behind. So you need to add lots of stiffeners which adds complexity, and places obstacles in the way of the flows you want to use.
Turbo says "Dumpster sounds so much more classy. It's the diamond of the cesspools." oh, and "The Dutch fans are drunk. Maybe"