Right now, with LLD, you have the option to define prototype graphs that are created for each discovered item.

It would be useful to have some kind of prototype graph that includes all discovered items. A couple of examples where a stacked graph of all discovered items:
CPU: a graph of all discovered cpu % usage, stacked.
HDD: a graph of all hdd (free+used), stacked.
PROCESSES: a graph of all processes memory usage, stacked.