Hippy,
Thanks for the constructive reply. Speaking personally, I'm usually only too happy to take jets off you at the stage you descibe - banter on - especially if it means I get them to a position where I want them, as opposed to where I usually get them when ATCCs do the transit

- banter off.
However, one of the major reasons why this doesn't routinely happen is supervisory constraints. Our allocator (equivilient to Mil Sup) may be monitoring a 6v6 east of Leuchars at the same time as my 1v1 north of silva. This "split" puts the sorties at the limits of his supervision on the scope anyway, without me deciding to pick up a transit from as far south as Cgy. But you're right, most of the time it's because - banter on - I find transits so mundane and prefer to spend those last few minutes psyching myself up for the warry-tactics type stuff that I'm about to do - banter off.
More communication required at all levels, perhaps?