I would release it.
Like others have stated, you can learn from peoples opinions a good bit. Andail is right about taking the time to improve it, but for me that can end up being a trap. It's really easy to get stuck on reworking a game (I've done it many times, and it is probably why I stopped making games).
So yeah, release it. Get feedback, then tackle a whole new project with the knowledge you gained.
Like others have stated, you can learn from peoples opinions a good bit. Andail is right about taking the time to improve it, but for me that can end up being a trap. It's really easy to get stuck on reworking a game (I've done it many times, and it is probably why I stopped making games).
So yeah, release it. Get feedback, then tackle a whole new project with the knowledge you gained.