| Hugh_K |
@ James Risner: I'll clarify my post then ;)
Essentially my point is that by the time a character can get their hands on an item/enhancement that will allow their weapon to inflict damage as if it were a size larger, that extra damage is not going to be a huge deal in the grand scheme of things as the base weapon damage is a relatively small portion of the overall damage a given attack might inflict.
Obviously this extra damage is a big advantage for a low level character but, in my view, it's not such a biggie for the kinds of levels who can afford it.
(Also, don't forget, if the PCs are running about with these kinds of weapon enhancements, there's nothing to stop their enemies acquiring/making the same kinds of things...)
Making it a weapon enhancement seems reasonable.
Or make a slotted wondrous item: "Bracers of Gravity Bow" (or "gloves of leaden blades")just price it at DM discretion (8 - 10k seems ok to me)