well, from the outdated vid, it looks damn fine, but with just one mode, this will feel pretty outdated. if you added more modes (damn right, im begging for some dual stick shooting awesomeness!), then this could be an awesome new fave of mine, along with the immortal meteor blitz and pewpew 2.
I would love more modes, but dual-stick no. The genre is overused and boring. Give me something new please! My suggestion: submit NOW as-is, and promise update/s. You'll get more money, more popularity, and I CAN PLAY NOW!!
... no? i utterly disagree. you'll have much better chances submitting a full featured, polished game to the appstore, as in such a fast moving market, first impressions DO count. if the game sucks, people wont think twice. Oh.