A better set up allowing a full turn

Recently, I read what I found to be a very interesting article regarding the set up - it said that after following the normal set up procedures, allow the head and upper body to move to the right, so that your backside is pointing over the left heel - it then does on to say that you cannot hope to turn fully or correctly about the right hip joint and right leg, which form the pivot, until they are in place and ready, so allow them to move into place first and turn on them afterwards
Aiming to initially turn the backside to point over the left heel is something new to me - is this correct?
PS I have been practising the new set up and it seems to allow a fairly comfortable and full turn

This is known as spine tilt. Pro's have a spine tilt of ~8-10 degrees, while most amateurs have ~3 degrees or less.

Butch Harmon calls this setting up with the ball under your heart (RHG) - if you drew a line through your heart, it would stop @ the ground with your ball, and it would barely graze your ear going up. It's made a huge difference in my game, allowing for a better turn, and an easier time getting to the top. I find it also stops a hip slide, and helps in loading the right side.

is there actually a spine tilt and a pre-set hip turn to the right which would aim the posterior over the left heel...............and is this only for the longer clubs?

My experience is that for longer clubs, the spine tilt is there, with the ball towards the front heel. No pre-turning of the hips; it's more like a lean from the top of your hips.

With shorter clubs, the ball moves back in my stance, and I play more upright.

think about it this way, if you are standing square, when you setup your right hand is lower than you left hand so you right should should be lower than your left shoulder. this will cause a spin tilt by itself. I have seen an article where they compare the big golf hitters with log choppers. and they show how the golfer like the wood chopper leans behind the ball to allow a much more harder blow.

^ That's the reason most amateurs don't have enough spine tilt using longer clubs - they figure that they're behind the ball enough because of the 'trail hand low' impression of tilting.

I'm still having to make a concious tilt to get my heart over the ball, and my ear away from it. I can feel a slight stretch in my lead obliques when I'm 'there' (but I'm 50 lbs overweight, and not terribly flexible).