Spells which are channeled (all the beams) or create an area of effect (like Anomaly) do not benefit at all from spell casting speed score, except when initially casting the spell.

This puts them at a disadvantage when compared to spells which are spammable (like Fireball or Artic spear) since these spells benefit from Spell Casting Speed, Spell Critical Strike Chance, and Spell Ailment Chance.

Summons are also an example of a spell category that gets no benefit from Spell Casting Speed, although if they are powerful enough on their own I suppose that doesn't matter (haven't played with summons yet so I'm not sure).