As of GameDir r2312, I've added the above changes (minus whatever typo I did for platinum plating).

While editing the armour values, it also turned out quite a few C-18/Jelly versions of armour did not even have item descriptions. Or even a friggin' picture, instead they use the tnt image as a placeholder. It also turned out pants did not have any NCTH values set at all. Some of these things have been like that for over a decade. For a community that frequently jacks off on how carefully it maintains and improves the game, that is utterly disgraceful.

Up until now, I've always tried to make as few disruptive changes to xmls as possible, as to allow modders to adapt easily. Perhaps that is the wrong way. Perhaps I should go and change the xmls so much that the pressure to get this xml editor working again (or a new one working) is big enough that someone finally does something like that? There are more than enough weird xml things that we keep around simply for compatibilitiy reasons. Like that weird workaround in AmmoTypes.xml, apparently made in a time when there when floating point numbers weren't invented yet.