[quote=@Stern Algorithm]
This is cool, reminds me somewhat of the light novel/manga/anime, Overlord.

I think monster characters would be a great idea, either monster class replaces job class, or all players have a 'default human' appearance with the 'were-ability' to transform into their chosen monster form to either enhance or supplement their chosen job class.
[/quote]

Hmm I think I'll go with a monster class system as the new 'job' system, makes the most sense plus allows these new 'player killers' to be essentially incognito.  The Dark Lord will be trying to raise up this new army of elites so he's gonna be sly about it.

Also thinking about it, I'm going to not go the player trapped inside the game route, instead everyone will be regular players who get involved with the Dark Lord's schemes unknowningly, thinking it is just some kind of special event or something.  As such there may be times where your character is doing things in the real world and might hear about some of the strange rumors going on about the game.  This should also add a level of mystery to what is actually happening.