Sortition would do away with parties and their obsessive war chest intrigues. Any sort of representation is presently mediated by the health of the party kitty, certainly not those straggling few that show up to vote now and then.

Not to say that British politics is all very lively and puts on a good show for the media but once you've gotten past the cheesy grins it boils down to an amazing amount of power concentrated in very few mittens.

Sortition of course is never going to happen.