That is different, they are politicians. We wouldn't be changing from a parliamentary democracy, we'll still have a PM as head of government. The president will be non political. Would anyone have objected to say David Attenborough as our president? Though he might struggle to not get involved in politics from an environmental standpoint. Still, there are some citizens the public universally respects. It has to be better once the Queen dies than this bunch of toffs, sponging off us in a life of ridiculous luxury for no other reason than being born in the right cot. We can do better.
What sorts of powers would the President have?