Provide Tier information for base types

When an item is normal rank, it's pretty easy to look at the required level to get a feel for the tier of the item's base type, but as soon as the item becomes magic or rare, when it is higher item level, that goes away due to the modifiers. It would be great to add something to the tool tip that communicates information about the Tier of the base type. There are just to many base types to have them all memorized.