Ventajas
BCG has top tier benefits, really smart colleagues, good in-office perks, and has a great company reputation.
This was a huge part of my experience and has made me go back forth about my decision to leave.
Desventajas
This is speaking as someone who is not on the consulting side. On my particular team, office politics were very strong with little to no opportunities for people outside of the inner circle to assimilate. More broadly, I feel like the salary trajectory was a little slow, there is a lack of location mobility and and promotions can be hard to come by. Even so, I have personally seen exceptions be made for certain people.
More broadly, being located in North America can be difficult since new roles are being open in other regions which is making internal mobility next to impossible. If you have any dissatisfaction with your current team, title, or level - there's a real possibility that you will have to wait multiple years before being able to make meaningful shifts towards your long term career goals.