The good thing about your cantrips outstripping your low-level slot spells for damage is that you then no longer need to use those low-level slots for damage spells, and can instead use them for the utility and defensive spells which are useful at all levels.
I was thinking if this was an actual design choice there.
I would like more cantrips in that case though. 3 or 4 cantrips known is very limiting from a long list of possible cantrips. When you need basic wizard 101 stuff like Light and Mage Hand, there's not a lot of room left for combat cantrips. Why not handle cantrips like all the other spells. Let the Wizard learn any number of them and then prepare 3-5 at a time. A powerful high level Wizard unable to learn a cantrip is an odd concept.
