Hi Ned
I understand your concern. However, you seem to be overconcerned about cll or misunderstand what cll means, although you are a current patient. You never expect 100% sport ability after CLL, although I am sort of believing that even 100% is achievable but it needs time and effort to get back to 100% normal. Most of people do CLL to get over their unhappiness on height, whether they are short or even tall.
I have met some people who finished cll and they enjoy their life so much. They are much happier than before, including myself, although my athletic ability is almost gone for now. I do believe I will recover and live a normal life. I don't expect my previous athletic ability, coz I am not an athlete, already old and have lots of things to do. Most of CLL patients will recover and can do most of exercises but muscles are not as flexible and bouncy as before. Jumping, sprinting, and agile movements likely will be compromised to a certain level after CLL but strength and endurance can be recovered normal (Some seems to be even stronger after CLL. It is depending on one's effort). I will just run, swim, and do some weights. That is all.
If somebody really cares about athletic ability for especially competitive sports, I recommend not to consider CLL. Ned, you talked about some bad cases for CLL. I think I read their stories, but honesty, I don't remember well. I think most of problems after or during cll are from external methods or extreme lengthening. 7-7.5 cm with Stryde nail with diligent stretching and dedicated recovery should be fine. As I said, I saw a couple of patients who did Stryde and their life is already quite normal, not including intense sports.
Good luck for your CLL!
Cheers,