With PSN back up I can finally give a decent critique of Brink. To quickly sum up, there's potential, but it's not there yet.
Here are my suggestions to make this a much more enjoyable game:

1. A.I. - Frankly, it stinks. This is a MP game, I shouldn't HAVE to complain about AI, but since joining a game with a team of real people feels like a rarity, it's a major sticking point of why I'm already considering trading this in. A quick, easy fix? I can't say a lobby would be quick and easy. It should've been there from the start. How about being able to set custom settings, including NO CPU PLAYERS. Did Splash Damage try it? Did it end up being incredibly boring, or something? The only reason I could understand CPU players being necessary is because the game supports the most paltry number of players since Doom 3. That was then, this is now. 8 on 8 is barely acceptable. 4 on 4 is an absolute joke.
BUUUUUT- with PSN being so wonky right now, maybe it's just a matter of everyone being able to play. Maybe in a few days it'll be rare to see CPU players. I really hope that's the case.

2. Maps - Bring on the map packs! Hope they're not full of dead ends and bottlenecks. If players have the ability to scale walls, lets have some walls to scale. The more paths to the objective, the better. These maps should be a honeycomb; a giant jungle-gym of death. Instead, there's only ever a couple options to get anywhere, and a whole lot of empty space that goes nowhere around it. Some maps get it, most feel like a lot of lost potential.

3. Technical difficulties - They'll get patched. The sooner, the better. I'll lump the menu in with this too. There are some options when choosing freeplay, but there's a whole lot of sub-options like voice, friendly fire, etc. that really need to be opened up. It would make the world a better place. I mean, they're RIGHT THERE! Just let me toggle them!' Also, pips refill sooo sloooow. The only time I ever have more than one filled is when I respawn. Maybe, when I get a kill or get an objective, I get a pip filled. Seems logical.

So those are my biggest complaints. Especially the AI, though, geez. If they're not going to work, let's just take them out of the equation. They're a cancer on my gameplay experience.
I'm sure I'll see plenty of work done to improve this game.

And to let anyone wondering know, I see the Battlefield and Left 4 Dead series as the best multiplayer has to offer, and weigh all my experiences against those.

Well just use your pips wisely. That's all I really have to say.

As far as I've been able to tell, every major open area, and every objective, has a minimum of 2 entrances. Any that have less than 2 direct entrances have at least 2 routes to reach one of them - usually more.

I'd say that gives us plenty of interesting routes, considering there's ALWAYS at least one path that only Lights or really good Mediums can take (sometimes they're fully Light-only), and usually a route that Mediums can take shortcuts on where Heavies can't, giving them a slightly larger edge over Heavies than just the base movement speed.

Id like to see a wider range of challenges because they were quite fun, gun camos would be a nice addition aswell for overall customization. I dont think some traditional game modes would hurt the game either, not so keen on TDM I think its absolutely boring but things like domination and CTF would be mad fun on Brink. I appreciate what they tried to do with their own specialized objectives but even so I preffer the traditional objectives alot more.

More ways out of the spawn points would be nice, to reduce the spawn camping.
Make the bottlenecks near the centre of maps so the fighting becomes more furious there instead of at your spawn.

And definitely more climbable areas for us skinny bodied players.

Make grenades independent of your refill meter. It is a [censored] getting penalised for actually helping out your teammates by refilling, then when you go to throw a grenade and you can't. Does Not encourage team play as it is, although I still help my team knowing I will be punished for it.

Also, show us with our own guns in the cutscenes and not some random ones.

Nuff said, give us more Maps and of course more "higher Ground" for the Skinny Folk like me

Glad to see I wasn't off-base with my thoughts.
I definitely agree we need to see more action for the lights. I hope that as I get more familiar with the maps, I'll find shortcuts, etc.

I actually thought there was going to be gun color customization. It's not important, but it'd be cool.

One big plus for this game that isn't immediately obvious- clothing and armor doesn't have any kind of stat changes. Nobody handicaps themselves by looking the way they want. Thumbs up to that!