YES! Fix potentially useful spells (barbed crescent and tourbillion), the other minor spells that are broke (sandspin,ect) can wait. Do it BEFORE adding anymore broken spells.

Breath spells COULD be useful if they worked more like white wind (faster cast time AND relies on max HP rather than current HP). Also you need to make NM less resistant.
I couldn't agree more about buff spells like Orcish CS.
The last two are less important imo as VW is waning and we could work around endgame content if some of the above were fixed (ie tourbillion).