I think you'd find 300 you can still steal way to easy. By going 360 it makes where things just happen to be just right to steal. More realistic.
Lol. I actually messed around with modding the way stealth works, and found 300 to be pretty good. At Stealth 5, it gets narrowed back down to around 60-90 anyway, due to the existing mechanics. I wasn't clever enough to get Stealth rank to affect their sight distance, but I'm sure it's possible.
