Currently, Deepwood Sniper requires (in addition to Point Blank Shot) Weapon Focus: Ranged Weapons.
I would like to suggest Weapon Focus: Thrown Weapons be an alternative qualifying feat so having either WF: Thrown or WF Ranged would qualify you for the PrE.
Sniper Shot currently works for Thrown Weapons (my thrower build has both feats) so I don't see why I had to spend a feat slot on WF: Ranged.
Thanks.