PR would enable a full range of opinion in the hc. Instead of head on confrontation, politicians would have to learn to work in coelition governments.
After all most of the democratic world does it that way.
TBF it enables a broader range of parties, not necessarily of opinion.
Our political system only works when a community elects a representative to speak for it; what is corrupting our system is that the representative is in a very large number of cases representing their party first.
I am not sure that going down the PR route, which embeds parties in the system even more than they are now, is the right way to go about things - we'd end up with lists that are maintained by party HQs. Personally I'd make it illegal to conduct national political fundraising, ban anyone who wasn't resident in a constituency from donating to any parties in that constituency (including donating to people in the constituency who then pass the money on) and massively weaken the whip system for MPs. I also think there is an argument for going back to the system of about 150 years ago where MPs who are appointed as ministers have to seek reelection when they are appointed.