That sounds like a great idea on how to get started. It might make things easier with local regulations and requirements, but I would think you'd still have to deal with most, if not all of the Fed and TTB stuff.
I'm in New Zealand so the regs are different. I'm not kidding myself that it will be regulartion free, but more that there will be a softer path than opening a full brewery.
The biggest problem is that the regs are unreadable to mortal humans so I'll probably need to pay a lawyer to actually find out what is required and see if I can map out a viable plan.
There's not a lot of margin in it though even in the best case scenario. NZD$280 seems to be the going rate for a 50 liter keg as I understand it (what the pub pays the brewer) and that rate is somewhat fixed whether it's a blonde ale or an heavy IPA. A NZ dollar is about 1.5x a US dollar.
My ingredient costs would be NZD$62 for a Centennial blonde ranging up to NZD$130 for a a generous hoppy pale ale. This is buying base malt by the sack, repitching yeast, and meeting the free shipping threshold, brewing on gas. About as cheap as you can get without going electric and getting wholesale ingredients.
I think the only way people do well is to brew large batches, but then you are up for massive capital outlay and the interest / cost of capital eats into that margin and finding customers becomes the core issue.
All ideas at this stage. But the desire to make awesome beer and take it to the world is strong. I'd just like an option that doesn't require mortgaging the house and going all-in to compete in a saturated market with some very big fish.