Dear Curry and Erenor
The answer to all your questions will be found in the link that Andyr has in his comment above. It takes you to a BG game development site called Pocket Plane. I would expect that this name is taken from the plane that exists in Throne of Bhaal.
Anyway at Pocket Plane there is a community of people interested ( perhaps to a level that is unhealthy

) in the playing and developing of the BG Trilogy.
You will find forums and most interstingly modifications that develop and ( I believe) improve the game.
In answer to Curry's question one such modifation is the addittion of a character called Finch. She is a hobbit who is a librarian . I think you find her in Bergost. She is a new NPC and like other NPC's has a quest and dialogue. She says so interesting things, runs quickly and is a good cleric. She also has Glasses of Identification so she is handy at identifing your magical items. She also carries a scroll case that I would suspect is bottomless as we could not fill it. She is a great party memeber and a lot of fun.
As I have explained above we have selected the Tutu mod which allows you to play the BG 1 game through the BG2 engine. This is great but we have added some other mods including ease of use which permits you to manage your inventory easy by permiting higher numbers in the stacks of items such as arrows and gems. Also items such as gem bags and scroll cases are avaliable in BG 1. Also characters are not restricted to weapon types and so my cleric can use a bow if they have appropriate skills.
Have a look and see what is there at Pocket Plane. I am sure that you will find something of interest.
All the best
David