Creo Parametric could use a Performance Diagnostic Tool to support large assembly management and general system performance. This could be a localized version of the Performance System Monitor for Windchill but at a much lower level.
For example I have several drawings that people have created that take 30-60+ minutes to open. They load up my memory to it's limit. These aren't our biggest or most complicated models yet they take longer to open sometimes.
It would be nice to figure out why. Is the model that big. Is there 2 assembly models attached to the drawing, different simplified reps...
A sort of hierarchal breakdown on what areas are leading to the problem would be ideal. This would be helpful for Drawings and assemblies, or those parts that just seem to cause problems.
Just a rough concept but I'd expect it to have more info:
Drawing (Memory: 500MB) *Using Multiple Simplified Reps of the same model