I was just playing and realized that the suddenness with which the tooltips appear and move (especially when moving the cursor towards the edge of the screen, on the same item, causing the tooltip to jump suddenly) is quite an eyesore that didn't bother me until I noticed it, now it sometimes makes looking around in my inventory almost painful.
I think updating this behavior to something more visually pleasing (smooth on-screen movement rather than sudden relocation, a slight fade in/out) would be great and, like the alchemy changes, not contrast with the original spirit of the game much, if done with subtlety.