Coaching suggestions
I have worked with a coach - mostly when I was racing - but some before too. The descending (and usually climbing to get there) was very helpful. Taking the right line and proper bike handling is essential. I would also have him/her teach you how to do an interval workout - useful for when you don't have a lot of time to train. You can get a great workout in less time. How about having them evaluate your pedaling technique - foot position, cadence, gear selection etc. Cornering technique is also good. Wanna learn how to trackstand? If you are riding in groups - how to correctly ride in a rotating pace line - hard to practice with only two though - but there are do's and don'ts. How to bunny hop your bike to avoid hazards or an accident.
I agree on the physiologic testing - it's just a number anyway.
Hope this helps!
debi
"Character cannot be developed in ease and quiet - only through experience of trial and suffering can the soul be strengthened, ambition inspired and success achieved" - Helen Keller