|Darksol the Painbringer|
Impact increases the weapons damage by one size category.
A warpriest that's one size larger does more damage. Quit it with the "source". Your character swings the weapon.
Will people please stop nick picking the rules with a fine tooth comb. It's getting ridiculous.
By peoples rational a warpriest can never benefit from Impact in any way.
Seriously? This is the game you want to play? Go be lawyers.
You act though as if splitting hairs is a silly thing to do when it comes to this game. It's not. Saying 'he did it,' when there's no male creature around, makes no sense. Saying 'she did it,' when not specifying which woman we're talking about, in a group of women, also isn't clear enough. (It's only through the pointing of fingers and/or singling out of the multiples that the proper meaning gets across.)
Whether you like it or not, specifics are important, if it's legal documents, or the rules of a game, and failing to properly define those specifics, and the subjects related to those specifics, leads to problems. Problems that, if not addressed, leads to consequences several people don't want to deal with.
Additionally, parsing what the rules mean and what a legal document entails are, fundamentally speaking, the same paradigm. There are several reasons that people play this game, and quite frankly, several of those who make a career of dissecting legal documents and other business paraphernalia are also people who play Pathfinder. And by the way you treat those who 'play legalese' with Pathfinder, I'm sure you'd say the opposite is also true. (That is, those who play Pathfinder are also great at reading legal documents and such.)
Lastly, who are you to tell us what we want to play? I didn't realize my parents actually gave a damn about this game and are telling me "Timmy, if you don't select a level of Wizard right now, I'm going to ground you from playing Pathfinder." By the way, my name is not Timmy. If we want to play "Pathfinder: Suits and Lawyers Edition," we can do that all we want with those who share that likeness. We'd also play "Pathfinder: Monopoly Edition" (AKA How to cheese the game) and "Pathfinder: Houseruled to be a Completely Different Game Edition" if we felt like it.