We have totally gone off topic but might as well continue. I'm sure there is one somewhere but if someone was able to post a diagram of the LTMA which showed the SIDS and STARS etc form all the major airports that are in such close proximity to each other, maybe, just maybe SH will get the drift (not holding my breath though).
I'm not saying the LTMA route structure is perfect... it is far from it and that is one of many reasons for LAMP, but given the complexity involved with having so many commercial airports in such a small space, it is no wonder that there are swathes of complicated CLASS A.
Of course the way to really simplify it would be to make the whole of the LTMA class A from ground up... but that's not what anyone wants