That much is really more than I'm interested in doing, especially as IIRC all the deities in the PHB have access to enough "powerful" domains for sufficient impressive capability. (Not always flat-out destruction; some of them prefer more subtle or supportive stuff.) Note, for instance, that every alignment domain grants Gate; while it has been nerfed from its original (horribly broken) form, it's still quite nice. And every deity who's not TN gets at least one alignment domain.