Who said anything about getting a visa? The entire point of my idea was about skipping German bureaucracy. The only US bureaucracy is the IRS, and 2 forms for offshore LLCs at that. Getting a visa actually defeats the purpose of the Wyoming LLC, since you'd have to pay federal taxes as a US resident. But with the Wyoming LLC being pass-through with the added benefit of zero liability (same arrangement as OP), you'd only have to pay corporate taxes and then German personal income taxes as a German resident. You don't need to step foot in the US at all.
You can't get a visa to run your own company under normal circumstances anyways, the only routes being O1, EB5 or EB1.