alt Hacker NewsWith increased granularity of representation, you can have more parties. Breaking The Two Party Doom Loop discussed details.
Our country has not increased the number of representatives sufficiently to allow local issues to reach national stage, so instead we all worry about national issues over local ones, for one example.
Most local issues shouldn't be handled nationally due to the diverse perspectives. That's pretty much the whole point of the (largely ignored) 10th amendment.