Restrictions suck.
While this could work if it was adjusted, having the WS naturally as they are now will not do. Unless they're merited fully they're all very weak, even just having 4/5 merits means most of them aren't worth using over other readily available WS (20% off the WSC at ~150 means 25 less base damage). Which means, in terms of efficiency, having a WS merited 4/5 equates to about not having it at all for many of the WS.