Mine is that Discovery should have been a series taking place in the Picard era.
It think the Dominion war works but as a framework for some of the more complicated choices the characters need to make. It also give us a chance for decisions to not play out in an hour episode.
It gave us the most interesting human klingon stories since TOS. Allies with different views and where the klingon perspective has more value.
I agree the actual battle scenes and episodes are usually week.
I also agree Sisko and the wraith / prophets stuff was terrible though. Though I always hated the prophet stories not just the end. I would have loved to see a better ending to Dukat and Winn than blasted with space magic.