Lift Adapter and Some Questions:

[VABird]

Not sure what size the smaller hole was so I opened them up to 1/2 inch for a paddock stand I bought from flipmeisters. If I were you I just make the larger size and include a 1/2 inch drill bit for those that need it.
I would think that anyone that is going to do maintance on their own bike would be able to drill out their own holes. That way you only have to make one type of brackets. Just my thought.

Food for thought for sure. I think a lot of guys would be reluctant to defile their bike for an aftermarket product. There's another way though; to make them all smaller and include a bushing for the bigger holes. That's where my thinking is now.