I said it was unlikely any other country would be interested in a case being expunged. I assume that each Country will have a slightly different take on charges, more likely an arrest without a conviction will not be relevant.
Everyone of those Countries has its own regulations on who can visit and what effect a criminal history will have, I doubt something being expunged has any effect, it certainly would not if you were not a USC and wished to visit the US.
Sounds like you do not have a Business Plan, this will be needed and assuming it is approved you will need to show you are meeting it to renew your visa.
Perhaps wait until the German operation is solid and the case looks more logical.