I greatly hope that there is NO DLC that is map packs that you have to pay for. Having to pay money for maps just so you can play with your friends on a certain map is very inconsiderate to force on your fans/customers. I hope they do not look at companies like Activision for ideas for DLC but at companies like Valve. Granted, I can understand map packs like the ones for Borderlands, which gives you new missions and are basically just expansions to the game itself. But having to pay to play multiplayer on a map that's just used as the setting for the multiplayer? No thanks!
Though, it'd be good to see DLC that's optional weapon packs or weapon skins, along with clothing items to further customize your character, like all the pre-order bonus stuff offered as DLC some time after.
Charging for the map packs is the 100% smart thing to do, otherwise no maps will be released. They have to pay for the time spent making them some how. And besides CoD doesn't punish players who dont have the map packs, it shuts off the possibility of those maps coming up for that player's party. if you join in session those options are not set.Now with Brink, because the storyline is played both single player and multiplayer the whole storyline changes with each new map added. meaning that
The multiplayer is the exact same thing as the singleplayer.
Not to mention the fact that so far all the Borderlands DLC's that have been released have added in entirely new sections of the game altogether it wasn't just 'hey lets add a new map' it was more 'Hey lets put in a second storyline altogether' doesn't compare with CoD now does it?
Valve doesn't just 'give away' map packs either, i've spent my fair share of money for the DLC on the Left 4 Dead series, now that was a complete piss off. There was absolutely nothing of value in any of those map packs, so what it added a new map that i would play once in a while because i was one of the only idiots stupid enough to buy it. the 'new maps' on those games were litterally the same thing as the original maps, they just looked different. That same thing goes with CoD, all their map packs add nothing of any real value to the game, only a new map to play on once in a while when everyone in the lobby has it.