Look I watched that review and the points seem valid if not very harshly judged. It's at least good to know coming in, and good for the developers to be aware of to prioritise fixes.
I never like IGN reviews as they focus on the negative only, but I do like to be aware of problems even if they are not in the 'disaster' proportions that this review makes them out to be.
From what it seems, all the issues can be fixed by some heavy, heavy DLC initiatives and updates. There will be maps to download and new gameplay modes later, which isn't cool as it feels like you received a 'lesser' version every time they do that, but it is nice to know that it can be "buffed".
It will only really build itself as a game later.
That said, I think Brink will be great for me now, but not the majority of 'standard' fps players looking for the same thing...which is fine because it wasn't made for them anyway.