After having read Bleach for more than 15 years, I finally got around to finishing it for the first time. Although I love the series overall, I was very disappointed by the last few volumes. By the end, there are literally dozens of unresolved plot threads, loose ends, unsatisfactory character arc resolutions, things that aren't explained well enough, etc. Some characters' endings were worse than others, with the MC's ending being particularly disappointing. I don't think the direction the series took near the end was a worthy ending for the series, nor the extent of the creator's ability.
Despite those complaints, the series overall is still among my favorites of all time, but if you read the entire thing through to the end, don't get your hopes up for a satisfactory conclusion.