Replaying Baldur's Gate

I’ve gotten to the ending battle of BG, and honestly… I’m not sure it’s worth the slog to finish the final showdown. Sticking a cheap maze at the end of the game was… quite underwhelming. Then you have the final 2 battles. Part of the problem is that these battles are so much harder than anything I’ve seen in the game so far – I really haven’t been trained to find the most efficient spells to take out such powerful foes – foes much more powerful than any member I have in my party, even at level 7. Looking up some quick solutions online, I find that you basically need to cheese the battle using some overly powerful spells. My intuition is that I’ve seen everything BG has to offer, and I’m ready for BG2. In general, while the game was pretty good, it wasn’t exceptional, particularly in the quest and NPC department, and I’d say it’s inferior to the Dark Sun games, not to mention the brilliant Planescape. Anyone have any additional insight here?