Right, but amending the constitution is constitutional reform. I think we agree with each other, we just haven't discussed the specifics. I don't know, if a small, culturally and racially homogenous country like Sweden can benefit from having various parties, then considering the USA's cultural, ethnic, religious, socio-economic diversity it would seem it really needs and would benefit by having multiple parties. Just some thoughts, I liked your post it was definitely thought provoking :) (i.e. beating back moneyed interest with stricter campaign finance laws, waiting for another SCOTUS judgement to reverse the last couple bad ones, even amending the constitution to specify the limits of free speech vis a vis political spending).
Our two party system isn't perfect, but in a nation as big and diverse as ours, there aren't really many workable alternatives.