Urm, unless I'm not understanding a game mechanic, reseting a base ability would allow you to have a higher suplemental ability than would otherwise be possible. As I recall the supplemental abilities are also capped by your base skills. For example, if you by raised the base skills associated with matter creations such that it could be level capped as opposed to base skill capped, and then ipr'd the base skills associated with it, you would be left with a matter creations skill higher than would be ordinarily possible by your base skills. While most implants are dependent on base abilities and treatment (I believe), there are examples that are not, such as the rebuilt NCU wrist implant which is dependent on comp lit & treatment.