I'm more concerned about the design issues rather than the category of airspace. If the RPTs want to saty out of E; it is just about impossible because they have to stay above FL180 to 36 ML, 30 CB, 45 SY etc. Almost impossible when you consider the STAR height requirements, or an almost straight in approach, e.g. RWY 07 from Rivet track in SY.
This has been done on purpose, to ensure that they fly in E; thus enabling further role out without problems as they will use it every day.
AIPA AFAP seem to have issues with the design; more information is needed from RPT Jet pilots here; I think most haven't yet looked at it, with the exception of some QFA linkers; because there is an underlying belief in the 'open mic' story that there won't be any change for the ML-SY, CB-SY, ML-BN etc. routes, which isn't exactly factual.
Bottle of Rum