[css3-transitions][css3-animations] Merging transitions & animations

There seems to be lots of duplicate functionality between those two 
specs. For example, the following properties accomplish almost identical 
goals:

- transition-duration / animation-duration
- transition-delay / animation-delay
- transition-timing-function / animation-timing-function

I was wondering, would the WG be receptive of any proposals to merge 
these two specs into one, or is it too late now? Thought I'd ask before 
starting to brainstorm about it, to avoid working on something that 
would get rejected on grounds of backwards compatibility.

-- 
Lea Verou (http://lea.verou.me | @LeaVerou)