I'm all for having CTA but it needs to be done properly. Class E is inappropriate, an 8nm control zone is inappropriate, and multiple frequency changes at a busy phase of flight is also inappropriate.
Same as going from centre to approach to tower to ground in pretty busy components of flight. Or ground to tower then being asked to contact approach and being given vectors when you're not at acceleration altitude, you have not finished your cockpit procedures and standard calls etc etc.
We do it everyday already
