I personally think that we will hardly see the "suit" and none of the Jedi extermination
I base this on the fact that GL has had the opportunity to show us all what we wanted to see but has opted to leave the juicy bits out.
Examples;
The Clone Wars- Everyone wanted to see one of the biggest events in the SW universe but GL has left three quarters if not more of it between Episode2 and 3.
Mandalorians-To include Jango, was to forget all about the Mandalore supercommandos and their part in the Clone Wars. I know it is based on EU, but who wouldn't want to see the Jedi face the Mandalores.
Vader-We had a chance to see Vader in his prime. A mean, lean bad ass fighting machine instead of the old man facing Obi Wan in the Death Star. We could have seen why he is one of the most feared men in the Galaxy. My guess is we wont.
I have said before many times; and all that could have been.........................................................................