All I have to say to that is that regardless of how you feel about them the US picked Trump and the UK picked Brexit. These were both events that demonstrated that elite opinion was so cloistered the rubes started throwing molotovs at the political system, in some cases just for the cheap laugh in the voting booth.

Yes, the UK absolutely needs additional dissent.

Really? Didn't you just demonstrate that when the "rubes" are given power, they vote Brexit and Trump?

That seems like a terrible idea.

If you create a dielectric barrier, the required charge to overcome it can have more effective power than the constant flow that would otherwise occur at a low resistance.