Yup, enjoyed this week's episode too. A little weirded out by how they created a solution for the propulsion problem, at least in the short term, which you'd think Starfleet could keep working on and make very much functional in the next century. They seem to be making it harder and harder for themselves to make this all work out within the established canon as they apparently say they will. They kinda seem to have the same problem as all Star Wars side stories, where everything has to still revolve around the established characters/archetypes and stories from the original series. All this Spock/Sarek and Mudd stuff just feels a bit lazy and overly convenient. Wish they'd stick to more subtle stuff like the small Archer homage in this episode.
Still, the last three episodes have all been heading in the right direction to me, so I'm still very much looking forward to seeing the rest of this series.