|A more representative House?
Yet many European countries manage quite happily with coalition after coalition. Why do we find them so difficult to deal with? My suspicion is it's a matter of architecture. Specifically, the psychological impact of the layout of the House of Commons.
Most parliaments are laid out in a curve, but by putting the two biggest parties directly facing each other, there is a requirement that we don't consider what would arguably be the only coalition that could genuinely argue that it had popular support - a Conservative/Labour coalition.
I know at this point supporters of both parties are probably falling to the floor and frothing at the mouth, but in many respects the parties aren't hugely distant, and a compromise between the two would ensure that we got through the maximum number of policies that had public support. Of course the negotiations would be painful - but politicians have to do something for their wages.
Whether or not it makes sense, I suspect we don't consider such a coalition - I haven't even heard it mentioned as a possibility - because of the seating plan of the House. And that isn't really a good enough reason.