I don't know if others have this, but sometimes I have symptoms which might be considered "sub-clinical", and they are noticeable to me but not necessarily measurable by the neuro. Slight tingling in my fingertips, the slight darkening of the "reds" in my vision from repeated optic neuritis, the slight hypersensitivity to temperature, etc. But for me, sub-clinical symptoms have been annoying.
Also, don't forget "MS fatigue". I know I was glad to have an explanation for those days when it feels like I have lead in my veins, and no energy, then a day or 2 later, I am totally fine.
I have not yet had the CCSVI procedure, as I am technically "benign MS", but benign doesn't mean I don't have any residual problems. For me it's just been 16 years since diagnosis, and aside from the less measurable things like fatigue, some cog fog, some tingling in my fingers, I haven't had clinical worsening of my disease (which I am very thankful for, considering I've had optic neuritis 5 or 6 times, plus an episode of diplopia, on top of some other weird sensory issues). I am hoping that when I do get the procedure, the things like fatigue and cog fog are made better.