Originally, I was in Human Resources and used MindManager to track organizational layout (and changes), projects, unions, legal cases, and (in a smaller company) individual employees. In the smaller organization, I used the notes feature to track evaluations, discipline, and performance issues (essentially a graphic contact management system). I'm now retired from HR and write fiction, using MindManager to plot stories and make timelines, as well as manage my personal financial activities.
Pros
Organization charts (with the ability to quickly expand and condense detail, and make change)
Notes field is intensely useful for tracking items over time
Due dates and progress indicators (in the ResultsManager add-in) are a life saver
Planning story structure and timelines
Giving a (virtual) 3D perspective - "Yeah, that's over in the top right corner"
Cons
The toolbar on the latest version is blue & white, tiny, and a little hard to see in my opinion.
It's getting complicated, and I only use the features I need, so I may miss some things.
Likelihood to Recommend
I've used it for 20 years for everything (personal finance, projects, and work). When I first started, the topics couldn't even collapse so the maps got very big very quickly. The newer versions have, obviously, eliminated that issue and I've used it very effectively for years managing HR in a 250-person utility. Because I was so familiar with it, it was very easy for me to use. The learning curve was pretty steep, though, so I had trouble getting other people to use it though they were always impressed by the maps I used.
