I would like to see them change it to where the dot from Crimson Tempest proc'd Venomous Wounds. Crimson Tempest sounds good in theory, but it hasn't really lived up to it's name.
Even though trash dps is irrelevant, it's still nice to not feel completely useless. Especially considering when classes like elemental shamans, survival hunters and monks are capable of dealing insane AoE damage just by spamming a single ability.
Back in Wrath, FoK used to be pretty strong just on it's own and for all 3 specs. I miss that.
CT should be worth it for sub. Combat is kinda screwed either way for actual AoE (a reasonable price for their current cleave potential). If CT procced VW the normal way it would be vastly OP in huge AoE situations. the energy regen + the damage of VW on top of an already strong AoE spec. That being said, i'd like to see it do -something- worthwhile.
If CT was to proc venomous wounds there would need to be a cap on the amount of targets it can return energy on, otherwise we would be swimming in energy. Not that having that much energy would bother me, but it would certainly be OP on fights like H Wind Lord.