Second, we need to help those Democrats who are aghast at their current party but who just can't bring themselves to join the Republicans to leave the Democrat Party for either a new centrist replacement party or some existing party (I don't know of any offhand) that would fit their views better. I'm thinking of the relationship the Republicans had to the Whigs in 1856. We might lose some of the more liberal Republicans to such a party, but that would be OK I think.
I think it's important to have at least two major parties in the country, and that the current Democrat Party can no longer serve the function of one of those parties. So how can we help disaffected Dems jump ship?