I like how Hybrid's widgets are set up. However, I think a bit more can be done with them.
What I'd like to do is make more widget areas and have fewer widget options (i.e. Primary Home, Single, etc...)
I've been playing around with the Widget Logic plugin, and it make things ridiculously easy to customize:
http://wordpress.org/extend/plugins/widget-logic
I think what I'd like to cut back on is the Primary and Secondary sections. Do something like:
* Primary Default
* Primary Home
* Primary Single
* Primary Page
* Primary Archive
Five is a good, round number. Do the same with Secondary.
Then, I'd like to add other areas like for after/before content. Footer widgets. Or, maybe even a header widget section.
Where would you like to see additional widget sections?