Wow great insights. I agree I have never used a unification app that executed, but that is exactly what we are aiming for. Job because it has never been done does not mean it can't be. By doing things like talking to people on here, it is my goal to be nothing like anything any of the other apps tried to do.
I agree with what you said about Tweetdeck, but what we are trying to do is more of a Tweetdeck / Hootsuite hybrid.