Having a high cost Ritual stone (raising multiple dead at once) as a conjuration master level spell, or the shout ice power that freezes them solid in destruction. Or slows time as an alteration spell. Within reason having ones like storm call would be too powerful without a cooldown.

What would be the point of shouts then if they were also available as spells.

I am more concerned with potion and disease effects that should perhaps be spells. Slow, drain melee damage, fortify regeneration, drain regeneration, fortify skills. The scripts are already in the code.

Because you can still use them with no cost as shouts but a cooldown, or with a magicka cost and no cooldown or something like the ritual stone you could use one more than once a day for a high magicka cost.

Then having the ability to Shout would no longer be special because any mage could do the same thing.

Tis a good thing I say.
Dragonshouts were gimmicky IMO.