Just to point out , the emperor has had nothing to do with SIth government sinces the end of GW1, so I doubt anyone will notice.
5) I sense a conflict brewing between General Garza and the Chancellor especially as
The Emperor's Voice has been in communication with the the Dark Council to some extent or another since the end of GW1, so the absence of the Emperor(or more specifically the Voice) will likely have some ramifications in terms of the power structure. Well at least until his inevitable return.
As for Garza and the Chancellor: