Ventajas
There are some wonderful and very smart people working at ChangeLab, but most of those people do not have enough power to influence decisions on projects, strategy, or things that impact culture. If you have small children and work in public health policy this is probably the best place to work possible because it is so flexible and accommodating on that front.
Desventajas
There are huge DEI issues and men, white people, and people without children are most likely to be promoted and paid more. They have since fixed most of the pay disparities but for years it was ripe for a legal challenge. Promotion process is not clear, management is very cagey about funding, raises, and other benefits and professional development. I have experienced maybe the worst, most unprofessional layoffs process imaginable while working for ChangeLab (did not get laid off but the impact to us all was extreme), and since then there is new management that does not seem to have learned anything from that. You will not get to work on things you want or the things you have the most expertise on. They have people leading portfolios who have less experience and education and knowledge than others on the same front (if you're white, a man, or don't have kids you are way more likely to be leading work you are not qualified to lead).