Oh, why not: let's mingle in this discussion.
We're all on the same website, so why make a difference between the place where the PC is standing? Makes no sense actually. What could possibly be the added value of merely selecting "Ohians" (does sound okay...) for a build?
Well it would have added value, if you would come together in Ohio now and then, or make the original "Ohian" aircraft, as only "ohians" can. Besides that, you might as well let other "earthians" in on the build as well.
I believe that there have been "down under" GB's. So why not Ohio GB's? Look, if it's up to me, have fun with the group build. Still, please inform me of the added value. What is the fun in that? Ans I truely mean this: if there is an essential value here, I might start a Dutch GB. So please post!
If there isn't any value added, why bother, I'd say...
As 'concerning to discriminatory'... I discriminate every time I make bread. The peanutbutter seems heavily offended when I choose to eat cheese instead...
Never done anything with a 'soap box groupbuild', but I reckon you'll find enough builders to join your GB, then.