The never-fulfilled mantra of the Republican.
I suppose we could always have Tony Blair as President, or some other former politician looking to line their pockets further and advance the interests of corporations and lobbiests (for a fee of course), or we could have the Putin/Medvedev type of merry-go-round, at least we will know who is who, as long as we remember whose turn it is...or maybe the US system whereby the President has executive and effective monopoly of power...or a figurehead like Ireland which is simply a drain on the economy and taxpayer.....
Or maybe we simply stick with a system that has been effective and fair for several centuries and only gives very limited constituional powers to the Monarchy and a whole raft of safeguards regarding the use of those powers.
If it ain't broke...don't fix it.