Yeah, I played G1 and G2 as they were, out the box -- since there were no USA/English Patches out there, even when I looked all over the Net.
I did hit a roadblock w/ G2, where I had to jump back like 2 or 3 saves b/c a key character died who I needed to talk to, for actually finishing one of the main quests -- at least in Morrowind, they let you know that "A key character died, so keep playing in this broken world or reload to a save before this character's death so you can finish the main quest."
Some other silly mistakes too, like certain quests didn't update as finished in my Journal Log when I finished them.
Still a good RPG. At least I never had any saves corrupt or data corruption or anything, like some other games have done to people in the past.