I think it would be a great idea to add more functionality in the Creo Illustrate modeltree.
As far as I know it is only possible to show the Number from a PDMLink PVZ file.
In our system it looks like this...

In Creo View it is possible to use alternate names in the modeltree.
The the same dataset looks like this...

I use the datastructure very intensively when I work with Creo Illustrate and therefore I really miss the functionality from Creo View.