Zack's feedback is mostly right, Doshii. I had eyes on this for a long time since I knew you'd potentially be heads over heels for this, but this is just a reskinned shooter clone. It's a milking cow for fans of the series but that's about it. A lot of what they could have done with the GitS universe basically ended up being untapped potential; and yes, Nexon - the game company - do deserve their lackluster reputation.
By all means, be hyped. Enjoy the hype. Eventually, grab the game and play around with it. You might have a few good evenings with it, even. But it doesn't have the making of a game the GitS IP deserves.