Hulking Lummox
Warlord
That's just the nature of Civ though. Some civs are better than others. It sounds to me like people want America to either be the best of their civ comparables, or altered enough where they are more unique. Neither of which are realistic expectations at this point in the Civ 5 process
I understand your sentiments. America isn't meant to be 100% domination focused. But its UA for example is kind of a relic by this point as it really does not benefit any of the victory conditions. With your first and second cities it can be useful. For the rest of the game it is a minor convenience that you weigh against "ehh I think I'll let city number 13 do it's own border thing and spend money on a unit or building instead."
Small anecdote here and then back to the point: In another thread I posted a big suggestion about a revised American UA. It was all about being able to liberate the cities that follow opposing ideologies into brand new CS's (and even into mega-huge CS's if you want). There are even fun ways it could go wrong like if the enemy coups the CS for example or uses gunboat diplomacy to turn it back to being allied with them (or they reconquer it, etc). You could supply the CS with troops via arsenal of freedom for example. I feel like something like that UA is an interesting mechanic for any American VC or Ideology. As a creative person I am very intrigued by upping the ante with all of the old civs as part of this whole process. For me I just enjoy imagining the game differently than the last 1300 hours of gameplay, whether it happens or not I guess.
