Hmm. It's an interesting one for me as I can't find anything wrong with All I Ask, but it does absolutely nothing for me. I don't object to the strings (and I do generally like sappy strings, such as on You Are the One to Make Me Cry) but neither the demo nor the final version sound all that good to me.
It may be that I just find the melody uninspiring, in which case no amount of production would change that for me. That being said, it's a good song to half tune out and just let it provide a relaxing bit of ambience (especially with the strings )