Two questions in regard to the subject title:
1. Is there any reason why there aren't any SF:2 addons in the base game? Not saying there has to be any or making any demands -- or even requests, really -- for some, but the omission of them has tickled my curiosity for quite a while.
2. If modded in, is there any particular (preferably relatively easy, of course) method of getting mecha to randomly use them? It'd be nice if plainclothes mecha had a chance to occasionally show up with one or two equipped.
Obviously, modding in variant mecha (SAN-X9a toting an upscaled Aux Grenade Launcher, ferex) would sorta' function the same way, but if there's a more elegant way of going about it, that'd be wonderful.