We need to get rid of FPTP
We had a referendum and PR fortunately lost.
I think if you are elected on a Labour platform, constituents have voted for a Labour MP and in turn for a lavel of labour representation in parliament. if you want to leave, the honourable thing to do is to resign your seat and stand again on your new platform in a by election, giving people the chance to elect either you or a labour representative.
I agree and obviously that applies regardless of party.
I'm a Tory voter and don't understand how the seven leaving Labour is positive in any way. I think a new central party is an unlikely pie in the sky, the LibDims are a one policy party and I can't see them increasing their vote in the next election, some of the Green Party's policies are frankly bonkers and if you keep chipping away at the labour party, with more people leaving, that gives Labour absolutely no chance of winning an election, not that they can anyway with Corbyn as leader.
I think to have an effective parliament, it's essential to have a strong opposition, no matter who is in power. It's good for checks and balances. Regretfully we don't have that and I don't see it changing.
What a bloody mess.