ok imagine them not having anything like a borg, a sentry or like a gunner. imagine them leaving out the grapple. imagine it lacking any classes that resemble the old classes... at what point will it just be a variation of team fortress instead of it being a variation of WF? there is a limit to how much you can stretch the meaning of the word "weapons factory".
If they really don't care about making it anything like q2wf or wfa or if they really don't care about what the wf(a) community would think of it... why the hell would they call it Weapons Factory: Revolution.
Like making a mod with flags and classes and then calling it Rocket Arena: Revolution?
If you dont want people to bitch about it not being like WF dont call it WF... simple...