It's really not, especially since all you'd need to do is replace Silent Dawn with something actually useful to increase Selene's use in the current meta. Let's be honest.
Yeah, that's the kind of little boost I was talking about.

A spell on the same cycle as chain stratagem that also give raid damage, even just a little, could make Selene become more interesting to consider. The silence currently serves absolutly no purpose with new role abilty and MNK stun.