Disruptor, SF, Leshrac, Sven, Tinker, AM, FV
SF sort of looks like deso arms which I'm not terribly impressed by
Disruptor custom effects could look real sweet
Lesh having a weapon instead of throwing particles
Sven shield could easily have a gold version, thats my bet (+custom stun? warcry? animation)
Tinker custom march is pretty interesting
AM already has the manta weapons, I'm not impressed by the bashers
Void shoulder(?) pieces could have custom chronosphere effect which could be interesting. caveat is that any big aoe thing having a custom animation can be a pseudo-nerf to rubick which i am not in love with