It's good to see original Stormtroopers (different from OT, but still similar), previous versions of AT-ATs, a cool tank, the Star Destroyer (and is from ANH) and of course the Death Star.
I think the original Stormtrooper now will have kind of 2 separate branches: the classic OT Stormtrooper (asymmetrical, wonky, rough - which I love) and the RO Stormtrooper (more idealized, most likely symmetrical, better fitting armor, and still resembling the classic Stormie).
The old crappy, wonky, asymmetrical and rough OT Stormtrooper armors are not good for today's standards of film-making. People going into the cinema don't want to see gaffer tape or badly built armor on a hi-def 3D movie. I love the crappy OT Stormie armor, it is the one and only for me, I have no interest in getting an idealized one, but I totally get the idea of new improved stuff for the present cinematic times.