This question actually inspired me to create an account, because I just recently went to the trouble to fabricate the exact thing you describe for my old Olympus XZ-1, which has a very similar situation on its underside. I made mine out of 0.25" ABS, which is available on eBay in sheets as small as 5x7", and is very easy to work with if you don't have a machine shop handy. I used a nylon flat head screw (couldn't find aluminum in 1/4-20, but these are widely available at hardware stores in the U.S.) to to attach to the camera along with some industrial double-sided tape (light weight is a priority in my case). In order to allow battery access, the ABS block is trimmed right up to the edge of the screw head - it's tight, but it works. The thing that you may find most interesting about my prototype, however, is that it's sized and grooved on the sides in such a way that it actually functions as the quick-release plate by itself, completely eliminating the need to mess with one at all for such a compact camera. Your camera's a little bigger, but probably still small enough to get away with this, if the idea appeals to you...