I'd like to see some more episodes about exploring a planet. It can connect to the larger plot in some way, but I would like to see them handle alien planets with different environments and lifeforms with the special effects we've seen so far. The planet with the intelligent spores would be a great jumping off point. Some classic tropes like the spores making a crewmember crazy with the twist that they just convinced him instead of altering his mind and it tied into the larger Klingon war plot and gave us some focus on Saru. I do feel it placed at an odd place in his arc, but it did show how the effects of the pilot had affected him and helped him comes to terms with it and his relationship with Burnham.