I wasn't thrilled with the mods that came out for BG1. Some components of the G3 tweak pack were good and BGTutu was awesome (i like how it was less buggy/no badly written fillers like BGT seemed to have). The NPC mods were ok, but since i had the BG1 NPC Project i wanted to see the added banters for my favorite characters so i didn't take Murneth, Finch, or Indira along. The siren's call was fun, it was a small quest that expanded on the original issue with Sil, the siren chick.
-I would have installed the OPP setup, i forgot about it till i moved forward to BGII and it makes the paperdolls look so much better.
When V6 of BGTutu comes out, FotD (compatible with BGTutu), and that Virtue thing comes out i'll probably go back just to play it with FotD, heard good things about that.
As far as Secret of Bonehill and The Grey Clan went, I like Sir Billybob but i just didn't enjoy either of them. Secret of Bonehill was weird, I wound up doing some quests to solve the murder the first time i went there, which didn't make sense, and I just thought most of the stuff was way to overpowered. TGC seemed to unbalance some stuff too, and i stopped when i saw the throng of bandits inside the Friendly Arm Inn, just seemed to jumbled together. They're not terrible, I am just really damn picky and i like things to blend pratically seamlessly with the game, which is much better done in BGII than BG.
In a list form--In order on my weidU log (minus the ones i didn't like)
-BGTutu v4 (I hear v6 is in beta)
-TutuFixpack (not needed in v6)--Just Core Fixes
-BG1 NPC Project (everything went pretty well, I liked the non-joinable NPC portraits for the most part)
-TutuFixpack -Components other than the fixpack
-G3 Tweak Pack