Make search an optional feature
NS Slidebar is very slick, but some users may not want/need the search functionality. Add an option to disable it, such that it will only display WordPress widgets. Could be useful in different scenarios, particularly for mobile-friendly website design where it's handy to ditch any existing sidebars altogether.
Personally, I'm trying to create a "book reader" with my wordpress site, and what I want to show in the NS Slidebar are the comments of the article.
I don't mind the search functionality, but I'm having troubles changing the settings and thinking about the problems the day I have to update.