Just because something is "boring" doesn't mean it is a bad thing, but I do agree that the polarization of parties is a very bad thing. I don't really care for having a actual liberal GOP wing or a actual conservative Dem wing but I do think pragmatism needs to be promoted and encouraged.
I even care about actual liberal GOP wing and actual conservative Democratic wings, and BIG overlap between main parties (after all - there are only 2 of them in US, unlike many countries of Europe). For me present situation, when even the most conservative Democratic congressman is substantially more liberal then most liberal Republican one, is simply absurd. That's why i longe about 1970th in this matter))) When pragmatists had much bigger say too. Unlike present "i am a boss - you are a fool, you are a boss - i am a fool" situation (and who is a "boss" is determined by simply a number of "D"'s and "R"'s elected, because no INTRAparty dissent is expected or tolerated), and "two armies of faithful til soldiers" standing before each other without any desire to hear opponent's argumentation...
IMHO - both present major political parties in US are, internally, absolutely "nondemocratic" (with small "d"), tolerate no dissent within them, and, in most cases, are led by extremely "pure" ideological "zealots" (and it doesn't matter whether these zealots are "right-wing teabaggers" or "left-wing moonbats"), and, thus - not very different from what may be, observed, say, in Russia, or similar countries. Contrary to what was 40-50 years ago, when Alabama's Democratic party was very different from national one, and the same - for Massachusetts's Republican party. Now you need a magnifying galss to find even subtle differences (which are natural because of different history, people and traditions) between them and national parties. Alabama's Democratic party essentially evolved in racial "Black party"... Yes, more developed system of "checks and balances" and somewhat different past and mentality so far prevented US from demagogic dictators, but, looking on Trump candidacy this year, i am not sure it will for long. After all Donald Trump is really close to hybrid of Vladimir Putin and Vladimir Zhirinovski of Russia))))
P.S. And, contrary to most European countries essentially there is nothing "third" for people who dislike BOTH that ideological Tweedledee and Tweedledum. Only them...