I think of her more as a catalyst, but really she has done a lot, esp. S2. Esp. because of [i don't know how to do a spolier tag].
More a catalyst in S1, more pivotal in S2, but . . . yeah, not "likeable." Of all previous main characters, I'd say Sisko was most serious but I liked him; his lighter moments with Jake or Cassidy, baseball fandom, his pop, etc. Basically any scene without Burnham in it in DSC is going to be more interesting or fun than one with her. Pike-Mount brought a bit of fun and charisma. People keep talking up SMG's acting chops, but all I see is that pained expression again and again and again . . . just don't like the character. Heck I liked Lorca a lot better for his quirkiness and fun. Until THE CHANGE.