What Recycled wants to say (I think) in that statements is that vaultmp is not being created with a concrete purpose (call it MMO, Co-Op or what you want) but a list of huge posibilities that the scripter/owner of the server decides what to do.
PD. Right now this is just a Alpha version, so the posibilities to do ingame are very few. The NPCs dont have AI, in fact the server starts with none npc (you have to script to put them). ¿A server to have a real play? Not yet, but I think is a good time to learn pawn/C++ with calm if in the future you want to host a server.