I believe this is where Wizards of the Coast come to play ...
Since as far as i know, they litteraly demanded that game must keep DnD rules.
Disagreed. WoTC had no problem with mobile cashgrabs and games like Sword Coast Legends. They don't care about rules.
And, let's be fair, for uninitiated "why a level 4 Wizard can't cast a level 3 spell" is a legit question. Still, it is a problem of using same terms for different systems rather then th
HE said loud and clear complicated. Call it circle(Gothic 2) , tier or whatever.
When the magician reaches certain levels, show a notification "new tier of magic available" and with a "help' button which the player can read some explanation like "just like your character has levels, spells has tiers ranging from 0 to 9, You now are a <<insert a homebrew "title">> and can cast spells like <<insert spell examples>>"
Title suggestions
- Char Lv 1~2 / Spell tier 1 - Novice
- Char Lv 3~4 / Spell tier 2 - Aspirant
- Char Lv 5~6 / Spell tier 3 - Fledgling
- Char Lv 7~8 / Spell tier 4 - Apprentice
- Char Lv 9~10 / Spell tier 5 - Adept
- Char Lv 11~13 / Spell tier 6 - Expert
- Char Lv 13~14 / Spell tier 7 - Master
- Char Lv 15~16 / Spell tier 8 - Archmage
BG3 will definitively not have tier 9 spells, like Wish or Time Stop, probably 6/7 and that is it. You can call Cone of Cold an "Adept" level spell and require Adept casters to cast.