You know, one great aspect why I really love BG 1 is because even the simple things in it meant something.
Back in the days you didn't need to come up with a huge dragon just to entertain and challenge the godlike Bhaalspawn, no, an Ogre Magus or a Tanar-Ri were enough to frighten me horribly.
I remember the Deathknight in Durlags Tower - I thought "OH my..., a Deathknight, what am I gonna do?! ngglll *shudder*" Sadly, in BG 2 I was way to hardened, by that time Deathknights were just annoying Wannabes in my eyes.
The same goes for items and combat, too.
Every Sword +1 in BG1 was a little treasure for me, possessing the power to turn my skin into stone or being able to cast a fireball for the first time made me feel very special. Again, in BG2 a Sword +1 was just another example for all those "aha, okay, more valuable junk to sell at the next shopkeeper, get into my sack" thingies.
Being hit by a flame arrow - ouuch!
I remember how I felt when I recieved my first Full plate Mail...! Melee and archer enemies were more dangerous in BG1 than in BG2, anyway, things felt more balanced - sure, a wizard could cause havoc but so could a warrior with lots of hp!
As I said in the beginning of this post - everything was a little bit more toned down and I really like this!
Don't get me wrong - I'm not trying to complain about being too powerful in BG2 or some underpowered items / abilities / combat mechanics etc., there are only few things that cannot be undone/changed with modding and things in BG2 are simply a little bit different - that's just the way it is.
I'm just so glad about the revival of all this "rookie stuff" (items, monsters, spells etc.) from BG1 WITH the enhancements of the BG2 features (UI features, bags of bottomless holding etc.)
How about you?