Reform rules in US Senate_Revisited_Compromise

The announcement by "moderate" Dem. Evan Bayh that he's leaving the Senate cause the mainstream and 24hr cable news channels to wonder what it all meant. Without consuming myself with that controversy, I did arrive at something of an epiphany with regard to finding "a way out" of the wilderness. And it harkens back to my prior post advocating a Senate rules reform lowering the threshhold to 55 votes for blocking filibusters. How? and why?, you wonder. I shall attempt to explain.
I believe, and given a burst of energy and time I'm sure I could find polls that back this up, that the nation is basically more moderate than either of the major political parties and certainly than the Congressional delegations representing each state. The Republicans in Congress are much more conservative than the average American voter or citizen. And the Democrats in Congress are more liberal than the average American. What's worse, the "moderates" in the House and Senate are a vanishing species. Each party is tending to elect only ideologues rather than moderates. This means, among other things, that any chance for meaningful compromise between the two parties in Congress grows less likely each successive session. And this would help explain the explosion in the use of filibusters in the Senate the last two presidential administrations.
So now for my soloution. If the Senate backed off of the 60 vote mandate for cloture, dropped it to 55, then the "no man's land" between the two parties would be a much smaller chasm. Particularly in competitive states the voters would find it in their interest to select more moderate Senators, who would be in position to cast "winning" votes more often. This could produce a resurgence of moderates and more accurately reflect the national electorate.
Who knows, then maybe even a moderate leaning news network might rise from the ashes of the failed prior networks. Or maybe somebody can find a way to make NPR and CSPAN interesting to Nascar fans.