I love how when you hover over an item name, it shows the details of that item. I have one minor suggestion to make it even better. 

As a user, it would be nice to see how many of a particular item I have in my inventory when I hover over an item so that I can always know how many of an item I have without having to go into my inventory screen. 

Example - 

Yes! It's a minor thing that would be very handy.