I certainly haven't seen any, and bows what I have seen, are kind of underpowered.
As it is, i havn't seen, and dont think I am likely to see, any bows with mighty +x. I Doubt mighty +x will go higher than 1, or 2, if the property is on any bow at all. This presents a problem for us bowers, since the only way for us to damage things with DR, is to take AA levels, or use a melee weapon.
I think, that with the lack of weapon additives, (cannot use flame weapon, bless weapon, magic weapon) There should be some sort of boost to bows in general, or some sort of additive to 'sharpen your arrows' or some such.
Foraging. It makes sense a ranger would be able to take cuttings from mushrooms, use plants and stuff to heal themsleves, etc. What i'm suggesting is a skill, sort of like tracking.
/c Forage ( or something) If the PC is near a set of mushrooms or plants it will make a check based on what kind of mushrooms/plants they are, and possibly gain some, which can be used to heal hp, cure poison, etc. (there could also be negative effects, poision, paralysis disease, etc. This skill would mainly be for rangers, who do not necesarily spend their time in town, so cannot gain gold, to buy supplies. After all, rangers are supposed to be able to live off the wilds. and such, yeah?