What might have been?

So AV has been read the last rites, but as a sort of postscript there have been predictions (posh word for guesses) as to what effect AV would have had on the 2010 election.  The suggestion is that the LibDems might have ended up with 90 seats at the expense of both Labour and (mainly) the Conservatives.  What this would have meant is that, although the Conservatives would still have been the biggest party in terms of seats, Labour and the LibDems between them would have had more seats, and so we could well have ended up with the famous (or infamous) "coalition of the losers".  Just think - Gordon Brown could still have been Prime Minister.  Now how scary is that?