We have several threads on Jax, but to me Kir Kanos has much more potential for his cost. Jax's ability to preventing the use of a focus / evade token is likely to allow one more point through (less on low agility ships) on the first shot of the round, but after that is fairly meaningless. A ship that takes fire from multiple sources generally doesn't have a focus/evade available to guard against the later attacks anyway.
Kir Kanos on the other hand, can add the same net damage, do so consistently, and most importantly do it AFTER seeing whether it will do him any good to do so.
If I roll 3 hits, I can use my evade to push a hit past a TIE's ability to defend himself. But if I had only rolled 1 hit (or zero) maybe I would want to save my evade to keep Kir Kanos alive. Alternately, maybe I roll one hit and one crit. If that crit will impact hull it might be worth blowing my token in order to push it through, but I can decide right then and there.
A guaranteed one hit, used if and when I want to, is a very big deal, especially because the mechanism for doing so (getting an evade token) is one that provides a direct benefit towards keeping Kir Kanos alive. Combined with the fact that his ship is awfully good in the first place, and capable of taking two modifications, and Kir Kanos may be a major player in a quite a few lists.
I can see him in a list with Turr Phennir / Soontir Fel / Carnor Jax, where the higher PS pilots put some damage on the target and Kir Kanos consistently hammers in the finishing blow. Squad Leader can help Kir Kanos combine focus with that evade for some seriously powerful hits.
Edited by KineticOperator