Well, I hate to sound like I'm bashing RE, but I will throw out my opinion on them and the US market....
they will never be anything more than a niche bike until the factory improves fit and finish, uses better quality metals for castings, and gets more power and smoothness from their motors.
quirky, needs regular maintenance = niche volume
consistent high quality and smoothness= mass appeal
The way they are now, they could sell a ton at Indian market prices, but not at current pricing. For some people, myself included, the quirks and vintage appeal is ok and somewhat enjoyable. For mainstream sales they will be deal breakers as their reputation spreads