I don't think this would fix anything. While some encounters should certainly be made less tedious (40 goblins ugh), combat encounter difficulty isn't really the problem. It's that LRing is so easy and other game mechanics (LR cutscenes, all new dialogue, companions explicitly saying "i'm tired") encourage resting to such a high degree. Sure, if all encounters were trivial, I'd *want* to LR less often. But I'd most likely end up resting the exact same amount in order to not miss content. If anything, easier encounters would make the contradiction in BG3's LR-system-vs-content design even more apparent.
Oh there are definitely other fixes, such as moving some rest cutscenes to crossing unmissable triggers on the map or making them available for both long AND short rests.
