I think before we actually have some kind of PR we should look at how communication has greatly changed in the last 100+ years, yet politics hasn't even evolved with the telegraph.
We have this idea that party members vote as prescribed by the whip with often no idea what they are voting on, having not even bothered to read the cover page because they thought it sounded boring.
If we could do something that stops this abhorrent abuse of democracy, whilst still allows for a cabinet to be formed. Then we could look at different methods of representation all together.