Sigh...You keep on bringing this up...
But, how are you going to define your "community of interest"?
Your household?
Your street?
Your neighborhood?
Your suburb area?
Your town/city?
Your metro area?
Your county?
Your regional area in the state?
Your state?
Your regional area in the country?
Your country?
Your continent?
ALL of those could be "communities of interest"
If you want to define it at one of the the lowest levels (which is what it appears you want to do), then we can't do that with 435 US Representatives (or for TX, 150 Reps and 31 Senators). Because there are just too many "communities of interest" at those levels.
BTW, people don't cooperate politically with "communities of interest". Most areas have people who care closely about lots of local issues, but disagree massively about wider issues. How do you propose reconciling those differences? BTW, by "most areas", I meant you could attach that definition to any one of those areas I listed above...even including the household...