Call me a cranky curmudgeon, but I'd prefer they actually improve the UI. I have about 150 feeds or so in my BL account, and recently thought about reorganizing them a bit.
I don't have the 3+ hours of time it'd take to do that. The re-org interface of BL is just horrendous. In fact, as much as I appreciate and enjoy the overall functionality of BL, the general UI needs a major, major, MAJOR overhaul.
Ideally, it'd involve DHTML, IMHO... drag and drop folders and feeds where I like 'em, drag individual posts into a "keep" or "send to friend" or "myBlog" bin, etc. I have fond memories of the now Yahoo-owned rich-app-style OddPost Webmail service, which was full of drag-and-drop goodness.
Right now, ANY operation requires an occasionally-very-slow reload of the page.
Package tracking? I can do that easily on Google, or even sign up for e-mail alerts from various shippers. Yawn.
I know, I know, I shouldn't look a gift horse, er, free Web service in the mouth, but heck... first things first, please. Improve the usability!