Animation blending in matinee

I don’t understand why blending in matinee is not still possible with 4.8…
Are we going to see this feature in 4.9?
UE4 has great animation blending system, but why can’t we use it in matinee?
Or there is a custom way that I’m not aware of?

Is this a pointless request? I mean do people prefer to use animmontage and trigger that event from matinee? Wouldn’t it be useful to blend “simple” animations right within matinee?