Right now I recommend hacka2 over hacka3 unless you really love a little bit stronger grind cutter. Falcon3 hacka2 definitely good choice. New bigger AoE on hacka skills will be nice with falconer aiming. Circling helps archer naturally low AoE status. And new falconer aiming is immune to destruction skills.
After testing, the grind cutter combo with CavalryCharge Circle3 attribute (bonus crit grind cutter damage) attribute does not improve damage (a lot). Unless the crit attack is based on your crit-attack-damage status, instead of a final +50% damage. On a 5s duration.
For bonus crit damage, pick ranger1 to get 5 critical shot damage buff stacks. Ranger’s buff is better and 100% up-time.
The pain barrier attribute at hacka3 is just 20s duration (60s cooldown on Hakka Pelle skill).
Hacka3 infinite assault is lacking. Needs buff or will not be worth.
Edit: is a ‘fake’ multi-hit too, always shows 3 crits or 3 non-crits.
Let’s wait for next ktest patch for additional rebalances.