davout1805 wrote:Is the size of a weapon (T, S, M, ...) based primarily on length? If so then I can just use that.
Yes, I think it is, it should work up to the larger sizes, though it doesn't differentiate too much once you get over say 9 feet.
With the caveat that size can vary a lot for a given weapon, some more than others; a spear can be 3' long or 18' feet long. Some types of swords might only vary a few inches. Generally you can at least loosely put them into categories by size though - those with radically different sizes need somewhat different stats (sometimes suggested in the text).
I'll put length in for the next revision, hopefully some time after I get back in town this week.
G