Blimey, look what I started !
Just to veer ever so slightly off thread, the Tower frequency at LBA doesn't half get crowded at times so here's a brainwave from a non-ATC person. Allocate a discrete frequency for published busy times only purely for clearance delivery for all instrument and VFR traffic to be manned by an appropriately trained ATCA(gasp !). Takes some pressure off the Tower controller so he or she can concentrate on actual movements and would be cheaper than having a GMC position. Now, I know I'm probably being over-simplistic and demonstrating a lack of appreciation of the overall picture but it's just an idea. There, I've said it. Time to take cover.
PS I would be more than happy to do the job. Just let me know !
PPS Chiglet. What on earth does watp,iktch mean ??