Is there any word on alt characters or costumes for mercenaries? I got happy when I heard of Leon in RPD again but found out it was retro graphics. A real let down in my opinion. Dont care much for modes, regular mercs is all I really played.
You might prefer to buy the PC version: it has all the DLC available plus the exclusive No Mercy Mercenaries Mode. Another exclusive is the Left For Dead 2 crossover, which includes characters and enemies from that game for Mercenaries.