So the solution for this is relying on attack spells level 0 (cantrips) to recover the spell efficiency? Lol
This post was all about spell slots. Cantrips do not use it.

Just to explain some of DnD5e in case you don’t know. 99% of the spells forces a saving throw.

Please bring spells slots to the discussion which is clearly the main point of this post. Saying that cantrips help casters to feel less nerfed won’t help you.