I enjoyed the episode, but agree it was just okay. My expectations for the Captain Carter episode actually wasn't that high to begin with, so that helped. I feel like this was just supposed to be the one small thing that started the multiverse events and then we're gonna start seeing things get a lot crazier as the show goes on. At least I hope.
Hell, it may even take into Season 2 for them to work out the kinks, much like with The Clone Wars.
The weird thing is Sebastian Stan voiced Bucky in the episode and he sounded off, but Josh Keaton is credited as the voice of Steve Rodgers and sounds wayyyy more like Chris Evans than Sebastian Stan sounded like himself (as Bucky).