The Levels should work similar to the Model Browser.
The Levels are on the panel together with icons for views, markups, issues, versions, etc.

The mentioned tools work with the entire file, but the Layer work only for the current view. It allows filtering object in the current view. Very similar to the Model Browser! If so it would be logical to do the following adjustments:
- Put the Levels button along with the Model Browser
- It brings the Levels panel, similar to the Model Browser, and Properties panels.
- Multiple choice - we should be able to select a number of Levels.
For example, I want to see how my ducts are coordinated between levels 9 and 10.
Thank you.