Yeah, what Our Kid said really. As with electoral reform, the Lib Dems have taken an idea that makes sound sense, and come up with something unappealing and clunky. And, frankly, if the torpedo-ing of this means the plan to reduce seats also fails, then hurrah. But then that requires the Lib Dems showing some principles and bravery, alien concepts to them.
Still, yet again we see that the most likely topplers of the coalition are the Tory right. Their righteous belief that they'd win a new election outright is a thing to behold.