Clearly this is the best episode of the series so far. They
do actually know how to make interesting shows then! So then why all the filler? Singing episodes, deep back story about some characters which is boring and nobody cares about it. The Spock stuff is overdone - him suddenly showing emotion has been done about 300x now across star trek by now for example. It's not surprising anymore.

But just way too much Spock in general - he's the main focus of the show, even more than the captain.
Also in fact the whole original series prequel idea is WAY overdone at this point but that's a different matter.
Overall the characters on this show aren't good. Anyone else not even know the names of maybe half the of the main characters?

The first officer (don't know her name) definitely needs to go. She's uninteresting, doesn't do anything and the acting isn't good.
Also enough with the same feel of all the planet settings. They
all look the same: dark, foreboding. Makes no sense and adds to the boring quality.