And that right there is one of the reasons I didn't do femurs.
You may be onto something here. However I think there is no one size fits all with this procedure and you have to think hard about what is right for you.
For example, for males who are in the 5'1, 5'2 range, I think gaining as much as possible from CLL will in general improve quality of life over the ratio + athleticism sacrifices (this is assuming a successful surgery with Stryde and a top doc). For those in the 5'5, 5'6 range I think this is not the case (imo).
If this model was 155cm-160cm and added 8.5cm on femurs, the aesthetics will be a different to what I would personally achieve.
For myself at 166.5cm I think a gain of 6.5cm is sufficient. It moves me from one height category to the next one up (imo) and if I can do that on femurs without having a strange looking ratio (like the model here) then I think it is the better choice vs. tibia.
It will reduce the time of lengthenting, hopefully reduce time of recovery and give a better chance of maximizing athletic performance.
I also thing body shape is important. Some people have a more "stubby" look and can look shorter even when they're the same height as a more leaner frame.
I remember seeing this on Mahboubian's before and after pics. Two guys went from 5'6 to 5'9 and although they both looked better, one in particular looked much taller due to his leaner frame.