I assume that the reason you wanted to make the first change stems from the fact that the craft wondrous item feat can make items that do exactly the same thing as the craft ring feat. For example, a cloak of invisibility or bracelet of resistance mimic the rings of the same name. This makes one wonder why anyone would bother choosing the craft ring feat. There are a few other similar situations, but they are less common and therefore less likely to come into play unless a player is trying to make nonstandard wondrous items (like an orb that has 50 lightning bolt charges - it should be a wand, obviously).
Anyway, although the change seems mechanically sound, it still doesn't address the issue I mentioned (which I am assuming for the purposes of making this response). One can still replace a ring of resistance with a headband of resistance or a ring of wizardry with a robe of wizardry and have the same effect. Unfortunately, if I had an easy solution that would solidify the difference between the craft ring and craft wondrous item feats, I would already be using it as a house rule.
As far as the second change goes, it seems to be an attempt to remove some of the additional items that have been added to the wondrous item list. The idea itself seems solid and balanced, but I am left wondering why you would need to make such a change (I find it very unlikely that a wizard would want to specialize in creating magical furniture, but maybe thats just me).
