As for your specific questions:
yes, there will be new or improved force powers.
no, there won't be NPCs in MP. That would require a lot of AI work that we don't think it worth the effort at this point.
No, that would require engine changes that we can't do.
---Jedi Guardian of the Newbie Questions
---Masters of the Force Team Leader / Creator
---Open Jedi Project Lead Moderator / Co-Founder