Before you crack out the jokes ('into the sea', 'as far away as possible' etc. etc.) it's a serious question. Westminster could soon be going through a renovation programme that could last up to 40 years and cost more than £7billion. That's a long time and a lot of money.
Electoral legitimacy is the weak spot in the Palace of Westminster. Once a new system is defined, that will be the place to pile the barrels of gunpowder. The building itself should become a nice little earner for the National Trust.