Interesting mod. Checked it out for an hour or so. I never realized how much I used the brackets to distinguish whether or not I'm hovering over an item.
One (very) minor annoyance is that flavor text that appears at the top center of the screen isn't... well, centered for shorter description texts, as seen in the attached picture to the original post. Obviously this is no fault of the mod, but I guess isn't as noticeable with the normal box that appears. Still, this is a very clean way to play the game, and one I'm likely to use for quite a while!
If you still want the brackets, it's easy to get them back by manually deleting all of the png files starting with "brack" inside the mod folder.
I find it to be an acceptable compromise between minimalism and functionality.
[interface_example.jpg expired]