It sounds good in theory but I'd don't think there is enough talent to go around. It would just make for a poorer product.
This is a good point.
Also some of those cities that were mentioned I would say are questionable. Speaking about the London possibility I would say no way. There isn't a big stadium here to support it at all and I doubt one gets built because quite frankly London seems to me like it is just a hockey city. You may eventually be able to get a solid fan base in London, but I think it would take a long time and a lot of years in the red to get to that point.