In the past I've most often run settings involving great a great deal of skullduggery and in many ways I'm very pleased with the rogue in this new iteration. Many of my games have played out like Assassin's Creed, Metal Great Solid or Splinter Cell for example.
One thing that surprises me is the apparent lack of rules for eliminating sentries undetected or performing an assassination. This seems strange as the obscure concept of landing on people in aerial combat surprisingly has a rule! Have I missed something?
The addition of ancestral hit points for low level characters plus the lowering of sneak attack damage would seem to indicate sneaking into fortresses and eliminating common guards could be very, very problematic for low level characters.