This

It also nullifies the problem of the Aussies knowing who to pressure on the last tackle every time, as we have two genuinely high class in play kickers there.

It really baffles me that people still consider Sinfield a loose forward. He's a half back.

As a Leeds fan I'd be happy to see Brough picked - providing he's playing as well when the WC comes around as he is now.

Based on previous years, I think that unlikely.

Yep .
That's the way I would go as well.

If Widdop is not a starter England deserve to fail.

I was going to make a compilation video of Sinfield's best bits to prove his worth to the England team but it only consisted of goal kicks...so I didn't bother.

England needs tactical kickers more than anything else, I am not sure if Sinfield is the man.
Some players have skill sets that combine to make them a definite choice, “The whole is greater than the sum of its parts.” to quote Aristotle, some teams are like that.
Kevin Sinfield IMO does not tick that box, Golden boot or not.
Pros,
Great Goal kicker
Great Captain and Leader, at SL Club level

Negatives,
"Solid" players do not cut it in the Halves at Test level, you have to be outstanding with pace and guile that can make something happen from nothing and make the opposition apprehensive on what you may do with the ball in your hands.
You can have a solid Winger or Lock, solid Halves lose more than they win.
Are Australia worried about what Sir Kev will do? Maybe they are.
Not quick enough to make defenses second guess his next move.
Never done much at Test level to take it to Australia.
General kicking at Test level not seen or up to scratch.
If he has not shone by now against Oz its unlikely he ever will.
Being made Captain of England was a badly thought out move that can only cause selection issues going forward.

Tall poppy syndrome is a very odd thing.

If we're leaving out players who "haven't shone against Australia" then it's going to be difficult for Ryan Hall to play the full game on his own.

I can put it in a Nutshell if you like.

Are Australia likely to be worried about facing the Golden Boot winner and the game he brings?

I've never doubted Sinfield as a captain or clubman, far from it, he is one of the very best. However, he's not the sort of player who can turn a game on its head with moments of freak individual brilliance. His honors prove he's a winner but he's far from being an individual matchwinner.

I'd just like to see out and out creative half-backs for England, I'm not interested in how many tackles they're going to make, it just detracts from the job in hand.

I can answer my own question.
I doubt it.
Australia know Sinfields game and I doubt they worry one bit about it other than his Goal kicking and they will be thinking that 100% kicking rate will not be a deciding factor on the score line.

They aren’t going to be scared of any of our half-backs so it’s a worthless question.

They'll be quaking in they're boots about Brough

Sarcasm aside why do people think we need 2 out and out creative halfbacks? We do need an organiser and Singield is the best we have.