I general I agree save scumming is not ideal, it is something I try to avoid as it more or less ruins the experience for me personally. Though I have resorted to save scumming from time to time as there are the occasional outcome that is just plain bad if you fail the speech roll (intimidation/persuasion/etc..) The Kagha scene being a prime example. (another example where I resorted to save scumming is when I wanted to visit the zhentarim hideout.) Although, I think that last one might be a bug. =/ Even though I saved that Zhentarim dude and he gave me the password I still had to beat two rolls in order to enter the hideout without the choice of giving the password. Save scumming was required because if I failed the check I was deaded by the exploding barrels...

With that little tangent out of the way. My personal opinion is that they don't really need to do much except to doing what they are doing (I.E. adjusting the difficulty of roles where save-scumming is abnormally high.) There are few choices so far in this game I feel the need to win the roll on but there are situations where it happens.