[@VitaVitaAR][@Rin] Hmm....good point. Still, how about this: I will limit my choices of the class of the "Fake" servant to Saber, Berserker, or Caster. 

Or the choice of Caster could be exchanged for a Rider so i can keep one or two ideas i had for a Rider open. 

Still, if you don't mind any class being picked (albeit with a not strong preference for the three weakest classes as Vita noted) then i have a few ideas i could choose from if any of the seven classes are ok. :)