I like what you're trying to do, but I think you are going to need to legislate that OTC is only to be used for what you intend it to be used for, or you'll make the Chair's life unnecessarily difficult. Alternatively, you can just give the Chair the power to reclassify an OTC as PI at their discretion and trust the Chair to use that discretion (which I would not have a problem with).

In any case, I appreciate the effort!