First of all: I know this has been asked a couple of times but there were never definite and solid answers to these questions so I will give it another try.
So I'm playing as Gondor and am about to receive Aragorn's offer of service to me. I know that my faction leaders will go bad crazy but I wonder about a couple of things:
1. Will my stewards keep going crazy even after he is dead due possible script limitations?
2. What of poor Eriador? Will they lose their heroic general if I accept?
3. What of Arnor? Can poor and innocent Eriador still transform into this absolute beast without Aragorn? The player sure can't but what about A.I.?
I will not accept his service if this means either of those things happens. I need a strong north for now occupying Isengard and the petty orc factions while I beat Mordor into non existence like their southern ally.