I hope "Orig" doesn't make it worse. New folks too often get committed, like XDrebel did, buying the other options (which are more fidgety to use) then you are stuck with supporting 3 times the parts. Maybe "Legacy" would be a better word to get your point across.
Or what if you could only have the latest tools/parts in the main section, and add another "Legacy Parts" section for the folks who already committed to other sensors.
Just thinking that would lessen the confusing choices new folks have tying to decide what to buy. Proximity Switches are just so much simpler and adjustment-free....thanks to your drop-on housing design, and size options on the downtubes.