@Jarno Mikkola, great tips and I tried the code you wrote. Works just fine and helps to give some advantages to my AC =), I suppose this cant work for strength due to the 18/xx percentage code?
@demivrgvs,
Tracking - Yes. sorry I actually meant detect invisibility. I would like to add that Tracking may be less useful in my case as I used Ranger as a ranged striker. If I was in melee I might be tempted to use it a bit more. However, if I wanted to detect an invisible enemy, its usually a desperate situation where I really want to use a 'detect invisibility' for a hard counter. As of now, tracking acts as a last resort and a soft counter. Thats nothing wrong with that though?
Wild Empathy - I thought the whole idea of the 'touch' range spell is because the ranger have to really go up close to charm the animal. However, 10 feet would be great, but since this spell has virtually unlimited uses, this spell may be a bit too powerful as BG1 likes to spawn a pack of 5 black bears at one location. Since you could do wild empathy at range, you could virtually charm the whole pack and have an army of bears at your disposal. Thats a bit broken for a low level party even if its situational. If we could do it at 10 feet, to prevent abuse, may I suggest a higher cooldown timing of 1 turn to prevent abuse? Another option could be another 1 use/4 level ability. I kind of think that summon wolf is a bit mystical given you could do it in a dungeon and I'm not sure if that makes sense for a ranger.
Quarry - I kind of love the current Quarry now, even if it remains unchanged, I'm happy. =) I'm cool with the removal of invisibility as well.
True ranger - Couldnt say it better than what you did. I think KR achieved this one. But I have totally not tested the melee two weapon ranger version =p
About the dex mod - Well, I actually roll characters and give them 14 dex, 16 strength and 17 con instead of 18/18/18 for fighters and a small boost here and there doesnt hurt =)
A minor suggestion - Rename 'Quarry' to 'Hunter's Quarry'. I think it sounds even more like a 'mark'. lol