I think that the Path of the Assassin should look like this to make it more interesting:
Dodge I (+ 7 Dodge) > Fast (+ 2 Initiative) > Dodge II (+ 8 Dodge) > Shadow Shift > Acrobat
Precision I (+ 15 Accuracy) > True Strike > Precision II (+ 15 Accuracy) > Shadow Strike (50 % armor penetration) > Break
Vital Strike I (+ 10 Crit. Chance / + 25 % Crit. Damage) > Eviscerate > Vital Strike II (+ 10 Crit. Chance / + 25 % Crit. Damage)
Hobble (- 2 Movement for 3 turns) > Executioner (+ 10 attack) > Bleed (- 3 hp per action)
Ambush I (+ 5 attack during the first turn) > Rain of Arrows > Ambush II (+ 5 attack during the first turn)