Well, I have to say, this turned out pretty much how I had hoped. I knew it wasn't going to be a full RB title, but I was hoping for something with a great setlist that I could port over to my existing song library. And so far, I'm super excited for all the songs and can't wait to see the rest of the setlist.
Whether or not I'll wind up actually playing the game is still to be determined (probably will if I ever bring my xbox somewhere and don't feel like lugging any of my instruments), but I do think this a smart move by HMX to get a wider audience without anyone having to worry about purchasing/finding instruments for their system.
I do agree with what someone else had mentioned earlier about having this as a mobile app (not sure if that would work so well without all of the DLC available on consoles), as I'm sure that would draw in a bunch of people.