I think I've watched this now a dozen times and love almost everything about it. Not sold on the soccer ball astromech, but will keep an open mind. I got very nervous that there was only the 'record' button on the back of the Stormtrooper armor, but was happy to see the 'pause' button after a couple viewings. I also liked the nod to the original McQuarrie art concept with Daisey Ridley's headwrap.
I'm ok with the flame saber as long as Luke's and any other Jedi sabers are normal.
I'm with you on this. I believe at the end of the trailer when everything has faded to black, you can hear a faint lightsaber sound effect, so I'm hopeful that means all others will be as we expect... Fingers crossed.
Next year can't come soon enough!