Let me tell you a story of woe. On turn 1 I cast firebolt with my wizard. On turn two I cast Web, and the entire web was destroyed. I know that the Web spell does have this in 5e, but because of this lingering effect, the spell is essentially ruined. If we could remove this effect on cantrips, I feel like it would empower other higher level spells further down the line.
I agree, I love the creativity, and maybe allow creating a surface if you target a surface instead of a creature, but otherwise firebolt should just be 1d10 damage.
