I also like what I see so far.
The feat sounds fine to me. especially at the end of that chain of feats
Swapping tracking for trapfinding is fine and useful for the party.
I would guess that Rapid Reload Heavy Crossbow would not apply to the exotic weapon Repeating Heavy Crossbow.
You may also want to consider the following feat from PHBII
CROSSBOW SNIPER
You are skilled in lining up accurate, deadly shots with your crossbow. Perhaps you add custom-made sights to your weapon, or you have learned to maximize the stability and precision the weapon offers.
Prerequisites: Proficiency with hand, heavy, or light crossbow, Weapon Focus with hand, heavy, or light crossbow, base attack bonus +1.
Benefit: When using a crossbow for which you have the Weapon Focus feat, you gain a bonus on damage rolls equal to 1/2 your Dexterity bonus.
If you have the skirmish or sneak attack ability, the maximum range at which you can make such attacks increases to 60 feet when you are using a crossbow for which you have the Weapon Focus feat.
Special: A fighter can select Crossbow Sniper as one of his fighter bonus feats.
Don't forget we are using flaws from Unearthed Arcana (2 max) which will bump up the number of feats available to you. You can also make your ranger lvl 4 rather than 3.
The feat sounds fine to me. especially at the end of that chain of feats
Swapping tracking for trapfinding is fine and useful for the party.
I would guess that Rapid Reload Heavy Crossbow would not apply to the exotic weapon Repeating Heavy Crossbow.
You may also want to consider the following feat from PHBII
CROSSBOW SNIPER
You are skilled in lining up accurate, deadly shots with your crossbow. Perhaps you add custom-made sights to your weapon, or you have learned to maximize the stability and precision the weapon offers.
Prerequisites: Proficiency with hand, heavy, or light crossbow, Weapon Focus with hand, heavy, or light crossbow, base attack bonus +1.
Benefit: When using a crossbow for which you have the Weapon Focus feat, you gain a bonus on damage rolls equal to 1/2 your Dexterity bonus.
If you have the skirmish or sneak attack ability, the maximum range at which you can make such attacks increases to 60 feet when you are using a crossbow for which you have the Weapon Focus feat.
Special: A fighter can select Crossbow Sniper as one of his fighter bonus feats.
Don't forget we are using flaws from Unearthed Arcana (2 max) which will bump up the number of feats available to you. You can also make your ranger lvl 4 rather than 3.