Pros
For me in particular, my direct manager is a positive. She is open and understanding to the fact that this is a call center job with a touch of finance. They have a gym on-site which is good for me, but its not free so I ended up with two gym memberships. The people I work with and (generally) the first level managers are very supportive in a role that sucks.
Cons
Almost everything. The quick summary is: You have zero autonomy and Vanguard lies to you when recruiting for this position. This is a call center job, and they are hugely understaffed. This means calls come constantly and things like vacation on Monday/Fridays is very limited due to staffing levels. You will be sold on 'remote office', but you will do nothing other than take calls. You have an average of 500 seconds to resolve every client situation. You work in the brokerage world, so if a transfer fails good luck taking 8.33 minutes to resolve that(especially because you will get a high level review of how they work). If you find a very common Vanguard mistake, good luck getting the resolutions team to fix it. I honestly cannot go into detail on every single problem this role has. The biggest problems are under training, the fact that Vanguard lies to employees, and the belief by management that you can plan using historical data.