Probably not.
Modifying individual weapons really won't get feathers in a ruffle enough to bother a full out discussion.
I don't see any reason that a char mod would be bad in this case, but with how things tend to go, editing equipment on the whims of players is a bad idea.
Neutral.
I'm with Gaddy on this one, single weapon mods on a whim is not a good idea, because one thing would lead to another and someone would later expect staff to mod weapons just because, which is stupid.
Neutral as well. ;p