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Moving spells between schools and levels is unlikely.
Most spell icons clearly identify their school through their design, and they would simply look inappropriate in another school.
From my point of view, the level of a spell strongly influences habit, as it affects where you obtain the spells, and there are quite a few places to get them; changing the levels would mix everything up. Moreover, essentially moving all unusable trash to the first level wouldn't increase diversity in the game.
Changing the effect or price of spells, especially those that are rarely used, seems more promising. Because the details of the original effects of these spells are not used very often, I don't think people will mind if they change.
I already answered this topic here: /topic/at/878021/