I think that could be a part of difficulty options. We will most definitely see a diffculty slider of some kind, but that doesn't stop Larian form implementing different difficulty options as well, e.g. 1. RAW D&D rules for player and AI 2. To hit advantage for player (like X-COM) 3. To hit advantage for player and to miss disadvantage (like X-COM)
The same could be an option for surfaces (damage rules), cantrip (surface&damage rules), and much else.
The trouble with adding a multitude of gameplay-affecting options is that it makes the gameplay harder to balance and test, which increases the workload of the QA team tremendously.
Well, we are in EA to test things, aren't we? They have this opportunity to try different options with us, the 1 million+ EA buyers.