As a current IFATC member in radar training, I can tell you personally that Fixes and Navaids play a huge role in helping a radar controller provide a safe and efficient service when controlling. A good example of this is using them to provide a visual aid for certain restrictions and/or establishing a proper approach plan to ensure all regulations and minimums are met. Below I will take you through an idea of how Navaids can be improved in game.
To start, one may visit IFATC.org. This is a tool that many controllers use to help plan their approaches and get an idea of the surrounding terrain or possible conflicts. Circled are the Fixes I am going to use in this example. Once I have identified them, I will note them on a piece of paper to have for when I open. After planning, I can implement this feature by taking the Fixes I have identified and finding them on the map and selecting them. Once selected, an option will appear to highlight/mark the navaid. This can be done simply as shown in the poorly photoshopped image below. The Fix itself will change color and be labeled. Controllers should also have the option to associate an altitude with the Fix and have that shown as well.
I do believe this feature could really make the controllers job a lot easier, especially until the terrain map is reimplemented into the game. Thanks for reading and please let me know if you have any thoughts below.
(All media was created and photoshopped by me)