People have tired that. The entire purpose of the BOV is to vent un-needed pressure so that it doesn't back up into the supercharger. The intercooler itself is a restriction in the flow of air. I have read where people have gotten compressor surge with the BOV after the intercooler. The second reason is if the BOV is too close to the MAF you will get turbulence through the MAF making the car hard to tune. The best place is between the head unit and the intercooler. It protects the head unit and doesn't interfere with anything else.
ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370.
Ret. USAF 1969-1973,1980-1996: Vietnam veteran. Aircraft maintenance. R & D, ICBM Operations.
Also own: 1997 Harley FXDWG, 1998 F-150, and 2002 Corvette LS1