No Differentiation in Powers for DoT or CC

I notice there is no difference in the CC types or the DOT types.

Bleed, fire, and poison are esscencially the same skill.

Freeze, petrify, and stun also are esscencially the same.

I was thinking it might be nice for each skill to have something different. For instance:

Bleed damage amounts are affected by crits Poison lowers speed or maybe hit

Fire damage decreases dodge amount.

Keep in mind these aare just examples and not actual suggestions. I really just wanted to know what people thought about CC and DOT having no real diversity to begin with.