As a project manager we tend to tag it onto the services consultants brief so if you were to do it I would get close to some smaller consultancies who can sell your service as a more complete service under their umbrella
I can’t see it becoming redundant just yet as any public sector end user is demanding it and there is a definite art in managing the process to target the easier/ cheaper points especially if they have set a target of so many points or an excellent grading- to me that where the niche is I have had sone guys who just score the project but where you make yourself invaluable is helping the design process to achieve the target
Anyway of my soapbox now!