@BDNeon
Work on the Crysis version of MWLL had already begun before Warhead/Wars was announced, but didn't progress to a beta state until after the expansion was released.
WAY before 0.1.0 was finally out, it was already clear that the mod would move to Wars at some point in the future, in fact, the only reason it was released for Vanilla Crysis at all was because of early adopters like you, people who'd already bought Crysis just for MWLL and who would've had a useless copy of a game they'd probably barely play lying around.
And then there was
this thread, where the plans to move to Wars with the next update was announced again.
Since Wars has quite a few advantages over Vanilla Crysis, especially better netcode, most people are looking forward to it.
And just fiy, the Warhead/Wars expansion has contains Warhead, a single player campaign that's imho alot better than the original one, although it is kinda short and Wars, a multiplayer update.
Since it's been out for a while, you should be able to get it quite cheap in a lot of places.