[Shinobi Killfist]

The elementalist, hedge/wizard, null wizard, the seer.  How do these work, do you use aspected priorities?  Null wizard I kind of assume its not supposed to be able to summon, but it forgot to put that in but maybe it can?  The expanded aspects part a few pages later at least details how those are built, but I can't find any details on these. 

[SpellBinder]

If I recall correctly from past discussions, they don't work; they're incomplete.  Best to ignore them and move on.

[Cabral]

I would probably treat them as aspected awakenings, but I think they need some additional consideration as to available metamagics. I think you are correct about null wizards. I think the intention is that they can only counterspell, banish, and disenchant.