Giving WHM and SCH increased DPS potential is mainly to offset the limited DPS potential of AST (which, will instead, be heavily supportive of the party in general, possibly doubling overall party DPS efficiency). It's also to close the gap between WHM and SCH DPS potential. Currently SCH DPS potential is much greater than WHM due to A) have a DPS base class, and B) Lustrate, Embrace, and Whispering Dawn all ignoring Cleric Stance (while WHM only has Benediction and it's lol5min cooldown), and C) SCH having 3 DPS skills that completely ignore ACC requirements while WHM has none.