I've been away from the Baldur's Gate series for years, way before the EEs came out, but I'm amazed and pleased to see that SCS is going as strong as ever. SCS has always been one of my favorite mods, but at the same time, I'm very nostalgic for vintage BG1. So my ideal version would also support bringing the gameplay back as closely to BG1 as possible. For the player characters, most of that can be achieved simply by self-restraint; don't dual wield, ignore the kits, don't use thief traps, etc. It's a bit of a hassle to distinguish between BG1 and BG2 spells, but it's still possible.