I can imagine there are is a portion of characters that use ranged weapons as a secondary means of damage output and didn't take any weapon focus in bows/crossbows/pebbles. Personally, I played a crossclassed ranger in the past with the archer path, but no weapon focus.- The once/day ability of the combined Archer path will now create arrows, bullets or bolts of the appropriate type based on which ranged weapon(s) the archer has invested a Weapon Focus feat in.
What will the once/day ability default to?
Edit: Haven't had the chance to test the whole thing, and can't say I can fathom all the implications of this, but it all sounds really neat.