I personally think it would help if NICE updated or better defined what it meant by:
GET (e.g. aerobic which is arguably what is hard to tolerate/causes harms with unmanageable increments in intensity),
Graded Activity Management (e.g. non-aerobic and learning to manage as best you can),
Pacing (which NICE defines and says is the patient's favoured approach but says there is no evidence to support),
and CBT (the type that is helpful for grieving, acceptance and coping and the type that is for kidding yourself you aren't sick),
...in the new guideline. All are I think used in the NHS specialist clinics - not by all clinics all the time, I think they pick and choose or focus on one or two and several may well base their 'treatment' approaches on clinical trials and not the NICE guideline per se.
I don't think GET or anything involving incremental increases in activity has any place in the NICE guideline at all. There is no research evidence supporting any of them. I would include pacing as a management tool not as a treatment. (edit: based on the principle of 'first do no harm').
But then I think any clinics run by therapists should be shut down and replaced by consultant led clinics with nurse practitioners to help people with pacing, symptomatic medications and benefit applications etc, as the Parkinsons' disease clinic in my area provides.
Anything that just tells the current therapists a different name for what they should do and lets them get on with it will just perpetuate the problem, and palming us off on IAPT would be just as bad.