Let's hope that those snipers don't own the APG, then - archetypes that extend sneak attack range, magic items that let you snipe sneak with impunity...
Friend of mine has a goblin rogue (sniper archetype) PC with a +31 Stealth modifier at level 4. He's building towards those elements in the APG. He's going to be sick.
I’m not sure if anyone has mentioned this yet or not, and I am not going to read through this thread for find out, but if you take Stealth as a skill for the advanced rogue talent Skill Mastery you can always take 10 for Stealth checks.