but the president is a figurehead role to a substantial extent is it not?
Indeed, so why would Blair be interested in the job then, that's the intriguing question. Clearly the man has always been hungry for power, and a position without power should have no interest for him.
This was amply illustrated when he resigned as Labour leader. Now former leaders tend to return to the backbenches (think of former leaders) but not Blair, he simultaneously resigned his parliamentary seat.
Obviously if he wasn't going to call the shots, then he didn't want to play the game. Serving his constituents, country, and party, was not what it was about. He had reached the top, and national politics was of no further personal use to him.
I suspect that at least some of the attraction of President of the EU (apart from his obvious ego) is the similar to the attraction of 'special middle-east peace envoy'. I have no doubt that lurking somewhere in the back of his mind is the "what if" thought.
What if, one day there was an attempt to have him arrested for violating international law and having been responsible for manufacturing lies to justify an illegal war. Now I know that many will dismiss that as totally infeasible, but Blair is married to an highly qualified lawyer of international law who knows that it is not totally infeasible. He also knows the mistake that Gen Pinochet made in believing that an international arrest warrant could never be issued. He also knows how preposterous it would be to arrest the existing/former President of the EU and Middle-East peace envoy.
Blair does consensus building like few other people unless dealt an impossible hand
He has been a totally useless 'consensus building' special middle-east peace envoy. Or is that what you meant by "unless dealt an impossible hand" ?