The consequences of the failure to reform the filibuster are already showing and they're exactly what you'd expect.

Republicans are blocking Obama's appointment to the head of the Consumer Financial Protection Bureau. It doesn't matter who it is. The Republicans are blocking the appointment because they don't like the CFPB. Democrats of course have enough votes to approve the appointment, but the Republicans are filibustering.

Kevin Drum:

Democrats could have gotten more out of [filibuster reform]. They could have gotten real filibuster reform, or, failing that, at least some concessions in return for a compromise. But they chickened out. Even after winning the fiscal cliff battle, and then forcing Republicans to back down over the debt ceiling, Dems still didn't understand the value of playing hardball. It was an opportunity missed.

I wonder if the speed at which this was thrown back in their faces is resulting in any soul searching. They're probably so used to it they don't realize anything's wrong.