I'm working on an internal business tool. It needs to be information dense, and our users are internal employees who undergo training, so if it comes down to it, we value efficiency over discoverability.
As I move through different components, I find myself using many different UI mechanisms to do very similar tasks, and I'm wondering whether I can't standardize a bit more.
For example, I have made a prototype using a carousel (or vertical subnav + window) so that users can move through topics viewing complex information screens one at a time:

In other cases, I am using a card metaphor to present a snapshot of data that can be clicked on to show a complex screen in a modal. I am generally hesitant of using modals, but in this case I believe it is appropriate because the user can only interact with the data within one card at a time.

In yet another case, the user needs to be able to see summarized data across many topic areas at a glance (as in the card ui), but ALSO needs to be able to see the details of multiple topics on the same screen. For this I have been thinking about an accordion layout:

I would rather unify my UI and not employ so many different mechanisms. Any advice? Thanks!