I guess I mean that FaceTime doesn't support all the iChat features and would be hard to just fit into iChat. Not to mention iChat is based around buddy lists,

I guess I mean that FaceTime doesn't support all the iChat features and would be hard to just fit into iChat. Not to mention iChat is based around buddy lists, AIM service (or Jabber) and FaceTime uses your address book, push notification server, etc. You can't screen share, file share, or multi-person video chat in FaceTime. It would be confusing to users if FaceTime was just tacked onto iChat as is. It just makes more sense to have it be a standalone beta.