Sorry if this has been discussed before and I didn't notice. I tried to make my EasyTutu as close to the original BG1 as possible, so I went with the option to remove access to BG2 spells during SCS installation. Turns out while the player is prevented from using those new spells, enemy mages are still perfectly able to use ones like Melf's Minute Meteors and Stoneskin on higher AI difficulties. More importantly, as we didn't have dedicated spell protection removal spells in the original BG1 repertoire and the BG2 version of Dispel Magic coming from EasyTutu don't act as one (contrary to vanilla BG1), mage duels end up being hugely imbalanced against the player. For instance, It took me countless reloads to beat the mages guarding Cloakwood Mines with zero means to take down their Minor Globes of Invulnerability. Am I missing something or is it the intended behaviour of SCS as of the current version?
If it is, I would propose for the SCS AI component to recognise vanilla BG1 spell limitations (if those are present, and revert BG1 spells to their original mechanics should the player choose to remove BG2 spells).
