We are currently extremely blessed on the companies new product, because they have placed a curious and open-minded product manager and a curious and open-minded ux-designer in charge of the administrative interface. Over half a year, those two have gained the trust of several admins within the company, all of them with experience of more than 10 years.
We have by now taught them about good information density.
Like, the permission pages, if you look at them just once, kinda look like bad 90s UIs. They throw a crapton of information at you.
But they contain a lot of smart things you only realize when actually using it from an admin perspective. Easy comparison of group permissions by keeping sorting orders and colors stable, so you can toggle between groups and just visually match what's different, because colors change. Highlights of edge cases here and there. SSO information around there as well. Loads of frontloaded necessary info with optional information behind various places.
You can move seriously fast in that interface once you understand it.
Parts of the company hate it for not being user friendly. I just got a mail that a customer admin was able to setup SSO in 15 minutes and debug 2 mapping issues in another 10 and now they are production ready.