Petitions update - to what porpoise?

A new petition finds its way onto the e-petitions page of the 10 Downing Street website (q.v.). Thirty five people feel strongly that:

We the undersigned petition the Prime Minister to Return the powers of The Royal Perogative to The Sovereign (HM Queen Elizabeth II).

I'm sure these people have considered carefully the irony of using an open forum created by a democratically elected government to petition for the creation of an autocracy. But why leave such piddling matters as dissolving parliament, declaring war and states of emergency to the Queen? (Not to mention the ownership of wild unmarked white swans, sturgeons, dolphins, porpoises and whales swimming in open and common waters?) Surely the obvious answer is to choose someone every year through a 16-part ITV show on Saturday nights? Now that's participatory democracy.

In the event of a tie, the winner would be the first person to spell prerogative correctly.