This is going to bug me... My VO2 Max has just changed to 50, which is the middle of the scale on the default Athlete watch face, so the pointer should be nicely aligned with the 12 o'clock marker. However, it isn't, it's slightly past it - see picture.
I guess if the tip of the pointer is 1 pixel wide and the screen is an even number of pixels wide then it's impossible to actually have the pointer centred, but I just can't stop myself noticing it every time I look!
My VO2 Max with my f5+ was 52, so all I can do is hope that over time it'll settle back to that (or something other than 50!)