I am trying to figure out the use case of login as a service. There obviously is one, but I am having trouble thinking of it. Clearly login means something different to each app, right?
Login reporting is cool... But if you build your own you can get full app reporting. Not sure of the exact value add but I would way rather have reporting on all pages not just login.
Localization? The hard part is translating my entire app. Not sure if I do that work, I'm going to be mad I have to translate the word login and logout
Click reset, store a unique id, send the user an email with a link including the unique id, verify that ID on the request and then allow a password change. Then to be secure that unique id needs to be timed out once it is generated to ensure the link is only good for a short period of time, etc.
Not to say anyone couldn't code all of that, but some of the simple features once fully thought out end up being fairly complex. In my experience many of the out of the box options still need to be extended to be fully realized for enterprise usage.
I don't have a ton of experience with DJango specifically so I could be mistaken - perhaps it does more than I know.
I think adding more systems increases your odds of being hacked, even if slightly lowering the damage of one hack. I would kinda prefer to avoid hacked all together.