collin
Explorer
I like what you're doing, but I think it's far too much. You'll have characters swimming in magic items.
I think if players and their GM want to break the rule about magic items for characters in using PF they are going to find a way to do it. Seriously, how do you control that kind of thing in a game? The frequency with which a fantasy world is populated by magic items is really dictated by the GM/DM. Plus, bear in mind this only applies to one character class, so it would only be useful if someone were playing an artificer in a group. However, this does give some incentive for someone to play an artificer.
I see your point about the warforged. It's a 20th level ability, though. But since warforged are considered 'living constructs' it might be best to just lump them under the 'all living creatures' exception.