Keep in mind, It's probably been at least 5 years or so since I last played BG1, but there is a little thing that seems to be missing in BGT.
In the original BG, clicking on a character several dozen times would reveal some "secret" and usually pretty funny lines (much like the old and new warcraft games) I was upset when they dumped this in BG2, and it doesnt seem that BGT grabs those sound files.
Anyway, thought it was worth mentioning.
Another thing I thought I should mention, this is kind of a personal taste thing, but being unable to equip items before they are Id'ed kind of takes the fun out of cursed items. I know most of us know what they are now, but I would like some funtionality to be developed where they might actually fool you if you arent careful.
-The Red Sheaf and Burning Wizard in Beregost seems to be missing a bartender.
-The Video for the gnoll fort where Dynaheir is just played when I got wailaid on the way to larswood.
-A real annoying one, after the Nashkell mines in the jovial juggler are two guys who keep arguing about team Baldur's gate, problem is the dialogue keeps looping, so its like an infinite noober every time I walk in there (and I will have to go there a bit, that's where officer Vai is). Unlike Noober, you cant just kill them without getting a rep loss

-Gah- another nasty one. One of the mods (I dont know which


*And on another note, what is the DEAL with all these bard npc's and bard only items?! I really hate bards, have in pretty much every rpg I have ever played, especially hate them in 2nd ed dnd. I guess one of you guys likes em a lot. hm. Where are all the monks, kensai, archers, and berserkers and assasins huh?!*
-There is an item, full plate plus one "Ebon Plate" that has the same AC as regular full plate. (looks cool though)