Ooh I love this.
I installed it and have browsed Hubski for about 5 minutes testing each of the Enhancement Suite's features. First of all, the Auto loading new posts while scrolling works very nicely, the new posts are loading extremely quickly, I'm impressed. The collapsing comments works great. And the unicode arrows are an improvement on a previous comment collapsing scrips I have seen. All the keyboard shortcuts work and are not difficult to remember. I'm really happy with the suite so far, thanks for putting in the work.
One more thing I'd like to see is a section in the user control panel devoted to HES which allows a user to individually turn on/off each feature of HES. For example I could turn off comment collapsing, but keep on Autoloading posts and keyboard shortcuts.
That is a luxury I know people would enjoy. Great work Josh.