For Jaxie - and others -- "over-privileged posh boy" - well, generally a mistake to get too enthusiastic about politicos of any badge. They invariably have a pot of incompetence and corruption to dip into.
I'm no special fan of any party, but I suggest you look at Starmer's history for 'posh boy', and as he's presently being advised by Mandelson, who's now a Lord having been suspended so often by the Labour Party that I lost count, don't hold your hopes too high on that front?
Re Cameron being a Lord, well, other Foreign Secs have been just that, makes little difference. You could look at the blinding incompetence of Major and Heseltine, tried to bankrupt the country on 'Black Wednesday' (or 'ERM fiasco') - now a Sir and Lord respectively. And the Mandelson I mentioned above, now a Lord, not sure where of, somewhere called Greasy Pole perhaps?
At least Cameron, if he's Foreign Sec, should find it easier to visit his offshore interests? And for those hoping to get an EU membership back, well, if you look at the posher papers that aren't dominated by 'Celebrity' twaddle, various EU interests have been muttering about snuggling back together a bit, as they've realised their own interests are being damaged by the split. Cameron is a friendly face to them - though they might have conceded a little more when he did the rounds in 2015 and if so, we might never have left?