My original take on the point of this show was that it was to tell us the adventures of the Enterprise the years before TOS and that the theme would be "Of COURSE Kirk's crew was great, but there have been so many great crews doing neat things" and the first season really seemed to bear that out. I thought the first finale was weird*, but it didn't shake me. The second season got experimental, but I thought a lot of it was fun. I was very suspicious of the musical episode, but in the end the explanation of it was a little silly, but it was just so good. I like musicals. But ultimately one of the things they said at the start, that this show would be more episodic and not season arcs....they snuck this one through. A lot of stuff that didn't feel like it was driving a season arc was. They definitely went for an epic finish.
*I haven't gotten over the moral of the first season premiere of the show about Captain Pike being "The universe is not going to be okay if you stay in charge of the Enterprise. It is vital that you get sidelined." I thought it was just weird, but it is pretty clear NOW that this show isn't about Pike. It is about how the TOS crew got assembled.