[quote=Jeddaven]
I feel like that level of genetic modification would not only be extremely resource intensive, but likely require ages of physical therapy to cope with such huge changes in terms of motor function. It'd also likely be an incredibly painful change unless the subject was put far, far, far, under. Imho, even with such advanced tech, such drastic modifications would still most likely be incredibly complicated.
[/quote]

Is it really that hard to use genetic modification to get rid of hereditary diseases?