An obvious full cyberleg has capacity of 20. Assume that you are at standard character creation (so only up to rating 12), and have only a single cyber-leg* and so can't make use of things which need both legs (jacks for example). What all do you stick into it? Large smuggling compartment, cyber-holster, a couple of points of armor ... that still leaves room for a 2nd smuggling compartment with space to go. Maybe stick some sort of blade or claw into it as a surprise (and couple with a kicking MA?)
Any other ideas?
* and assuming that you have character concept reasons for doing that.
On a related note: how big is a large smuggling compartment? If you could in theory stick three of them in to a leg, they can't be too huge .... to me a bread box is something you can stick a few loaves of bread in, so the guidance in the book isn't useful.
And another question: the availability rating of armor or enhance strength/agility, does that add to the limb rating, or is it on its own? (i.e. armor has a rating of five, which would make it impossible to put more than one point on a limb at character creation). Armor was never a priority for me when looking at arms, but legs have so much spare capacity, it seems that armoring up would make sense, if allowed.