<whew> i thought i was about to get slapped again

No, I agree with your idea. I have previously installed the plastic theme and add ons. I subsequently uninstalled them (to my slight regret) and have installed your customizer. Using the customizer gave me the sense that the plastic themes/add ons would have been a natural extension of the customizer. it just felt ...easy? natural? your customizer is brilliant and incorporating the plastic theme/add ons as an advanced option or a regular option will seem like a natural step and combination for these apps.

So yes, maybe halting the plastic set up and incorporating the themes/packs into the customizer would be the right way to go. This is just my opinion, i am sure that many others might agree/disagree but i believe that it could work very sucessfully.