If I am understanding everything correctly then Brink will mainly be a multiplayer only game. I mean similiar to ETQW there is gonna be option to play singleplayer, but still. It’s definetly isn’t the main focus. And it seems to be like they are hyping it up as: “You play it as a regular singleplayer game… then you can invite friends for co-op and then you turn it into multiplayer”. Granted ETQW had pretty smart bots. And all of this is ofcourse in the case when singleplayer is as I actually imagine.
This just seems to be one of the things that reviewers are going to jump @ when Brink releases. I mean I don’t care about their opinion, I’m gonna get Brink either way. But a lot of people do care and reviewer’s are kind of ignorant some times. With Quake Wars many were totally confused - but in Brink SD luckily put the wheel which simplifies things for everybody. Although as I understand Brink still only has the objective mode. Which will definetly disappoint many, specially since there aren’t gonna be mods on the consoles.

There’s nothing really that new there as far as playing vs bots and joining games in progress other than that it started as a “single player” game. It does make you wonder how they transition it: if you are playing on a server from the get go or if there is a server migration thing in effect or even if that part is a server running on your own computer. Maybe add that to your list of questions unless the answer is already out there somewhere?