Finally rode this today...here's my thoughts:
First, this was VERY intense, g-force wise for me and honestly it was about 10% too fast for me to fully enjoy it. IMO the spinning and the things you're expected to look at make it feel worse and I totally understand why people get sick from this ride. I felt it slightly, but not enough to get pukey....no desire to ride it again though, but I'm in my mid 40's now and don't ride a lot of big coasters anymore.
The queue and pre-shows were good. Good use of the size of the buildings they had and the Poseidon's Fury style effect was done well I'm sure more impressive to people who haven't experienced Poseidon's Fury (at IOA).
I was a bit disappointed by the ride itself. It IS mostly in Space with some projects of Eson and you do see the moon and earth and a couple of jump points and other effects but it was just not what I expected. I was hoping with those big projection effects they would have you go through time jumps and see more of the bright colored stuff we've seen in the GOTG movies, or things to show we are traveling through time better. Jokes were fine...Rocket did come off as less snarky but that's probably that they didn't use Bradley Cooper?
My friend I was riding with enjoyed it a lot more than I did, and if the speed was turned down just slightly, or maybe a longer brief slow point between scenes would have helped. At one point after turning I was really feeling not right but it then did a regular straight section for a bit, so I recovered.
I rode Mission:Breakout at DCA and much prefer that honestly.
Disney got what they wanted, a huge indoor thrill ride at EPCOT, but I wonder what they could have done with just the UoE building or using a smaller building behind it.
EDIT: In case it matters, we were in the last car, row 9...apparently that can be more intense than the front.