I actually found the old surface-cantrips to be more fun than the current ones that are very basic (e.g. deal X damage).
That's what cantrips are supposed to be, though. Level 0 spells that don't cost a spell slot and can be spammed by wizards so they don't have to have to run up to the enemy and hit them in the face with their puny mage baby arms when they have run out of spell slots.
There was some gameplay around surfaces like combining it with CC that I enjoyed. So I hope more complex spells including surface-spells become part of the game - maybe specially shapes surfaces.
There are surely some spells that can be added. Wall of Fire for example comes to mind.
