Interesting thought for solving the Democratic identity crisus, albeit completely infeasible:

• Every Democrat jumps the aisle to Republican.
• Split the Republican party along whatever lines seem natural at the time.

This comes up because I just saw someone rooting for a "Republican filibuster-proof supermajority", and it occured to me that is basically the worst case scenario; the Democrats providing just enough opposition to hold the Republicans together, but not having enough power to accomplish anything themselves. I'd actually rather see the "Democrats" fold entirely, because remember those interests won't disappear into thin air; complete chaos may be preferable at this point to the current order.

I'm not really seriously proposing this, and I estimate the probability at a flat zero, lost in the margin of error. But it is interesting to consider.