QUOTE (The Jopp @ Aug 3 2010, 05:55 AM)

Perhaps they meant that modular modifications shouldn’t cost any capacity but that in itself sound a bit strange.
Your breakdown is pretty much the same as I look at it. Unfortunately this is an area that just never got completely fleshed out, 3E was a little clearer regarding cyberlimbs in general (well not in the main book, but once the cyber book came out).
Where it breaks down for me is when a character buys a modular limb with enhanced attributes. Say a character buys a modular arm with 2 points of enhancements for strength, body, and agility and it has hand razors (total of 8 capacity used). Now he wants a spare swapable hand that doesn't have the hand razors so he can get past some tough scanners, but he still wants it to have the same stats as the rest of his arm (pretend both are already max customized, so ignore that option). Unfortulately the new hand only has a capacity of 4 so it can't fit the 6 poins of enhancements necessary to match the original hand, and thats even without the razors. So the characters extra replacement hand, which is exactly the same in every way as his original replacement hand, doesn't have the same capabilities.