I'm curious to see the enchanments that people imbue on their items. They can be any type like target, touch or constant. Just pick out any one and post it here.
Perhaps constant use of the Raise Dead spell could weaken a NPC every time he/she gets resurected. This could be done by knocking off a point from constitution if they have been continually rasied over a period of time.
It would prevent its use on a constant scale because it would just make everyone in your party weaker and weaker.
I like to go through the game several times with the NPC with differnet characters just so I can explore all of the different dialogues they have. But if they are really intresting then I always keep them with me with every game.
I think it would be cool to have him start off as a paladin and from there you could perhaps influence what he becomes later in the game. So instead of having him turn into a Death Knight in the end you could try to stop him from going evil and to stay as a paladin.
But of course you could still let him turn into a Death Knight in the end if you were a really evil character.