Wow this is an old thread. Yep, firebolt is now strictly less powerful than RAW with the range reduction and reversion back to 5e mechanics, and spellcasters are in more danger as they can't BA jump+disengage from melee enemies. Especially since ladders can be climbed with 0 movement, so enemies that are in reality ~40 ft away (20 feet horizontal, 20 feet vertical) can climb to your high-ground spellcaster with a single move action. This makes high ground less of a refuge than it should be.
+0.7 to increased ranges to firebolt/longbow/EB. I don't think the full 120 ft (or 600 ft for longbow) is necessary, but up to 90 ft would probably be a good balance of buff while still limiting the free damage in fights. A good DM will adjust encounters by giving enemies ranged weapons/having them flee or hide if players constantly make use of sniping, whereas BG3's AI DM won't.
