It would be nice if a patterened ipart work feature would display as a pattern when you bring it into an assembly. This way you would use said pattern to create a feature driven pattern within the assembly.
Note: The only way I've found to display ipart work features within the assembly is to include each individual feature in the ipart member table.
For example: Modeling up a LED boards. First the user must create the raw boards with features such as mounting holes. Sometimes the mounting hole location is driven by the LED placement. It would be nice to use patterened Work Points to use as a place holders to locate said LEDs inorder to determine the location of the mouting holes. Than the user would bring the raw boards (iparts) into an assembly along with the LEDs. The user could then use the pattern created within the ipart files to pattern the LED on the raw board.
Just a thought.