Actually adept rogues get 4 "points" to distribute over their weapons in order to prevent unbalanced combinations. Flick Reaper is 2, Steam Gunner is 3, Edge Punisher is 1, Twin Blade is 1. So thus, Haseo's combination works, whereas the one Elly proposed would not.

Really, it'd be a pretty boring MMO. The classes aren't all that interesting, and there's not much customization outside of Adept Rogue. It'd play like a really bad WoW clone.