Seems like just adding PALS to the waist belt would address these issues quite nicely. All these other goodies are already available elsewhere. No need to re-invent the wheel.
+1, and then that way one could put on exactly what pouch is wanted/needed - it often seems that a manufacturer's idea of what you need in a pouch isn't exactly what YOU need, and with the PALS it would be much more versatile.