This section is mostly to detail any changes from the main Pathfinder rules that may effect players. the list may not be comprehensive, it is just here as a reminder of some of the core changes.
Precision attack range: Several precision based bonuses to ranged attacks may only be applied to targets within 30 feet. I have changed this to within the first range increment of the attack. This applies to sneak attack, point blank shot etc. This makes weapons like bows and crossbows a bit more deadly in the hands of rogues and the like, while nerfing thrown weapons a little. This seems a little more realistic to me, and also makes snipers and ambush attacks more deadly, which fits the flavor of my session.
Dodge: Works as normal, save that you can choose to designate a dodge opponent, Granting a +2 dodge bonus vs that opponent, but losing the bonus against everyone else. The choice to designate or undesignate a target is made at the start of your turn and lasts until you change it. This is how it works in some other D20 games, and I prefer it.