Result after a week: Laine is playing so much more, BUT not really with toys. He is finding things in his environment to play with. Today it was string and a bowl of uncracked pecans. He was making people out of the pecans. I have always been a big believer in simple toys, but I didn't realize that even an overabundance of simple toys (even wooden ones...gasp...even WOODEN BLOCKS) could overstimulate a child. I am not going to say that we are eating rainbows and pooping butterflies (thanks Horton), but things are just a little freer.
We still have the toys, and on rainy days it is pretty nifty to be able to say let's go find a new toy to play with, so all in all it was a win.