lol cool idea.. But i dunno if its good in the long run.. Ive drilled some very precise holes in my laptop where the fan bays are to allow more air to flow in directly. I also added filters inside to prevent dust.. After about 2 months i noticed the exposed parts on the filter had turned really dark, filled with dust and i could also see that inside there was some dust starting to develop..
I think if u fully expose the back cover with the cooling pad blasting air in there its gonna get filled with dust after a while of use like that.. More dust means more heat..
If only they develop a properly effective cooling pad that actually conditions the air to make it ice cool (15-20 degrees) and blows it through a straw or something, directly into the fan bay.. now that would allow for some serrious overclocking lol..