I was so lucky to be able to see them when they came to NYC. If they came back to the US I would go anywhere, I'm a 9 hour drive from NYC and I have a McFly fan friend who lives in Vegas so we could easily go to LA.
I don't really care where they go in the US I just want them to come here! I also think they could DEFINITELY do more dates than the 4 they had last time AND a much bigger venue. Gramercy Theater where I saw them in NYC has a capacity of 500 - which I think is why the tickets sold out in less than 2 minutes. I get that they might not be able to do an arena tour here but they could absolutely fill venues closer to the 5,000 range.