So guys I have no idea how to play new maps except this one:
play together at the definite time by mutual arrangement

If you're the one who want to play Decimation or another DLC, post your login here, DLC's you have and add to friends(in game) everyone you see in this topic who satisfy your requirements. If you have friends who have DLC's but they dont visit that forum - ask them to visit it and answer.
When the count of players would be around 6-12 we could arrange time to play.

Example:
my DLC's: Decimation
login: oddzie

i know it's kinda difficult but let's try

login: Cinerir
DLC's: Decimation

but I guess there'll be ppl from all over the world, so some will have horrible ping....we'd have to find a suitable server.

There's already a topic like this. Just invite some DLC-owners who posted their names in that one. I wouldn't expect a full server though.. As long as the payment-options don't get expanded by Crytek (or whoever they'll blame for that) they're keeping a firm brake on the DLC-sales.

DLC mappack owners only-topic; http://www.gamesas.com/forums/viewtopic.php?f=40&t=33528&sid=3416f7fce492d329efc8ddc20ea87c5b

Btw;
Login; DjangoXL2
DLC; 1&2

oh, i didn't see that. thanks.