Fighter :
Thunder/AS build - The buff instantly gives you 50% more Attack speed, so it's possible to stack this along with initial attack speed gear you have, making you a killing machine for 15 seconds with 100%+ AS.
*errors: SHSN 6/6
Master class passive : 6/6
Karma :

Nothing much to say for Karma, he still has same metagame as before, epic Critical passive just adds more spice.
Crane Beta v0.25:

After grasping the concept of the new skills, this is what I came up with. Having solid bleed to be used in fast conjunction with DoTExplode does massive damage. For others, you need poison DoT skill(for stunning/duration 6s at 1/X) , burn DoT skill(for confuse/duration 6s 1/X) bleed/pain is still entirely optional, so I leave this to you. The great part about this new function is that, you can obtain more flexibility for debuffing and inflicting status conditions. For example, this would be my combo RP +1 bar> KD - > poison - > after he get up green stun - > sleep - > Charge 2 Bars of RP - > KD - > burn - > red confuse - > Explode - > poison - > green stun ...Sleep
This is still beta test build, but I wish to try it in the near future, the new crane is indeed a very hard class to master.
*errors shown in picture:
Graceful Backstab = 1/3
Put out the Flames = 1/3
Mystical Typhoon = 5/5
Dodon Barrage = 5/5