I can see the logic that Larian is using, but I think spell casters might outpace martial classes if the extra cantrip effects remain.
Wait till you get further in you'll realize it's a much bigger problem than just cantrips. I ran into a rogue who threw "alchemical fire" at me. It did enough damage to be a level 2 spell and it wasn't resistable. It also created a large fire on the ground. It was way way too strong for a level 2 enemy. Something like that should be on a level 5 enemy minimum.