I'd love for this to be possible someday. I'm not sure how exactly the region check works, or exactly how Gateway avoids it, but if the firmware encryption method is the same for all regions and there are no differences in hardware, it could be feasible to use a limited form of firmware spoofing to change regions using the firmware contained in an out-of-region ROM, and maybe also software-based downgrading (not that that would be all that useful since you'd still need hardware mods to go above 4.5).