While there're several threads about impressions on the game and new NPCs already, there's not much information about the in-game mechanics of BG2:EE if compared to BG:EE. I've decided to make a discussion about these changes and I hope it will be interesting to others.
The first thing I've discovered is while thrown axes (and hammers) get bonuses from STR in BG2:EE, thrown daggers get bonuses from DEX, as well as bows and xbows do.
Meanwhile, from the character screen of Jaheira it can be seen DEX also gives bonuses +hit to slings. Here
is confirmed that slings get STR damage bonuses. So right now, it seems slings receive a THAC0 bonus from both STR and DEX.
And characteristics of the Sling of Seeking are deliberatly changed: now it gives unlimited +1 bullets. Yay!
The second thing I've found is bounty hunter's special traps can be thrown again (like in BG2, while it has been nerfed in BG:EE). Yay!
Yoshimo in my party has been able to place his special traps ranged.
The third thing is that now Avenger's Spider form is NOT immune to the Web spell, but it's a bug
according to the Devs.
Share your discoveries too:-)
EDIT: Now with the new forum section available, I move this discussion to BG2:EE specific one:)