So I know you can now use vampire seduction to do a standing bite on a non-sleeping npc, but are there any other cool new abilities vampires have gained out side of VL form that I haven't seen yet?

not that i know of.

Regular vampire powers still svck.

You can use the chalice to make your drain ability better for a certain amount of time.

if i remember all it does is let you drain magicka and stamina as well,so it is still useless.

You can use Vampires seduction to feed on awake enemies/people now as a normal form vampire.