Do you think we should be limited to 2 rings and one amulet?
We can have one amulet and ten rings, one for each finger, if they reduce the Enchantment possibility for rings.
Thus we can have amulets that can possibly have heavy enchantments, and several rings that would add a bit of enchantment each that could sum up to the power of the amulets for each five rings.
That would allow for a lot of customizations for any character, low level or high level, but it could become a bit complex, so I think that maximum of two or three rings for each hand is a better choice.