I dont remember if there is a Wisdom trace in Falconry or if its just to hit and damage.
There is (Deadly Instinct), but it's Tier-4, making it the most expensive Battle Trance to unlock. I only use it for WIS-based builds which don't already get a WIS trance, such as
Axel's battlecleric. On a melee ranger, though, you can't really afford it, since the crit range and multiplier bonuses are in different trees (DWS and Tempest). So if you're spending e.g. 41 Tempest (capstone) / 21 DWS (+1 crit range), that only leaves 18-20 APs for Falconry; even with a +2 Universal AP tome, that's still not enough for Deadly Instinct without sacrificing DPS from DWS or Tempest instead.
If you wanted a WIS-based ranger, splashing monk 3 for Henshin (or Dragon Disciple) WIS to hit / dmg / Trance is a lot cheaper (13 APs), but would cost you the last two Tempest cores.
I know I've read a lot comments that have the DH tree as being a bit lame, wasn't sure if a change to your starting stats and enhancements might net any benefit.
As I've mentioned elsewhere, Dark Hunter tree is worse than Tempest for dual-wielding and worse than Deepwood Stalker (or Horizon Walker) for archery. So there's not much incentive to go heavy into DH tree on a dual-wielder, apart from Bleed the Weak and maybe some extra sneak attack or Imbue dice.
My solution(?) was to go for THF build with 41 Dark Hunter / 21 DWS - you don't need any points in Tempest if you're not dual-wielding! - though it's definitely a "square peg into round hole" approach. It's not bad, but it's way behind the current meta. Dark Hunter 15 / Dragonlord 5 would make it stronger, but only because DLord makes everything stronger, not because it's a particularly good combo.