My original conception for winds of spring involved it being a cloud spell anyway. So as far as I'm concerned go ahead

They're quite fine spells in their current form too though.
If you want to make "the classic witch spell" you have to do it with E/N! Because those are the paths that witches get in game. It would be weird having that spell and witches being totally incapable of casting it.
Perhaps the "bless not-sacreds" spell could #nextspell soulslay? That should be a pretty significant drawback.... I don't think it would be unreasonable either, because that can be a very powerful effect. I'd consider making the spell mr-negates too.