A project I wish I had the time & skill for is actually enhancing list views & management. Would love the ability to view lists better, tweets/members, and also shuffle the people around with lesser clicks, lists are primarily how I view twitter on the desktop, columns & colums in tweetdeck, ticking away. Managing it on the go is what I feel Twitter & every app out there is delivering poorly. If you have the motivation to, there are some users who'd appreciate development in this area, not that you've not done plenty as is, which is appreciated 🙂