Tettra supports a three-tiered hierarchy:
We intentionally don't allow for anything outside of those three levels in the hierarchy. We have plenty of experience with content in other systems being difficult to find because it's in a sub folder of a folder that's nested in another folder that's within a larger folder, and so on and so forth. We've also experienced how having nested folders allows difficult information to be hidden from view by being placed in the depths of a folder structure.
We combat those two issues by keeping our system intentionally shallow. There are only three layers so anything you publish is kept close to the surface and very discoverable.
We believe the best companies in the future will adopt these sorts of transparent approaches and are leading the way with our own product decisions.
If that's an issue for your group we can recommend naming conventions and other ways to make better use of the three levels available to use. If so, use chat or email to let us know.