Well, maybe not really too minor, but, given the scope of other changes, pretty minor:
Change the Night blade ability 'Summon Shade' so that it is a toggle. Give it the Daedric Summoning treatment. ZOS is obviously not adding Necromancer anytime soon, so, why not adapt the NB class to allow the 'kind of Necro' type feeling? I know I'd much rather it be more of a pet, anyone else?