1. I'm not sure people understand British democracy. People are upset that they aren't getting the government they voted for - well, I have news for you: the British people don't vote for a government. You voted for your local representative. You may or may not have got the person you wanted, but you will have got the representative that most people in your area wanted. That is as far as your democratic rights go in this country. We choose representatives, and we trust them to have some influence on how the government is formed.
2. I'm sure the TV debates helped with this misconception. It felt like we were voting for Gordon, Dave or Nick - after all, they were the people we saw debating.
3. I am certain that pure PR would be a disaster. It's interesting to look at post-war Germany, and the power the FDP had. With only slight changes in the relative left-right balance, the FDP could decide who got to govern. I'd hate to have a system where the Lib Dems always got to choose the government.
4. I think we need to keep the link between MPs and their local constituencies. Moreover, I certainly want to vote for a person, not just a party.
5. If the British people want to elect their government (I would advise them against it), perhaps we could separate this government election from the election of MPs? That way, the governmental election could use some form of PR without messing with the current representative system. This would be something like a Presidential system, and would therefore completely mess up the constitution - it would probably move us in a republican direction.
On second thoughts, forget I mentioned it. It sounds dreadful.
In the meantime, it's all very interesting indeed.