newbie
undisambiguated
I think you're right here, though some combination of AV and PR might be on the table. The two most imortant things is not to allow:
i) the whole thing to get bogged down in committees as you mention and
ii) not to allow a 3-option referendum. When the republic movement in Australia couldn't sort out their differences over political reform there, the conservatives in power seized on the opportunity and held a 3-option referendum. The Monarchy option won, despite the combined vote for a republic being well over 50%. Clegg cannot allow PR and AV to split the reform vote on any referendum.
That crunching noise is the sound of minds being concentrated, which is why it'd be interesting to be a fly on the wall in all the various smoke-free rooms just now.
I think the electorate would buy equal size constituencies + AV, not sure about fixed term parliaments, maybe, while PR would sink like a stone. If the LDs can push the Cs into something along those lines they just might avoid being squeezed into insignificance at the next election. Otherwise they're history, the futility of voting for the third party having just been brutally exposed.
Even the tories can see how fptp has shafted them- more votes than Blair yielding no majority rather than a landslide.