Alphakill

In my opinion emulator doesn't need to be cycle accurate to be LLE because HLE and LLE are just methods so no matter how innacurate zsnes is it's still LLE.
What do you mean by modules and working out of box? If you mean bios then they can sell without it. LLE emulators of older consoles don't really use any modules since they don't emulate any libraries just hardware by simulating registers according to a guy who was PS1 GPU plugin developer. From what I read consoles like Saturn and PS1 didn't really have any standardized library unlike PS3 every company used their own so HLE emulation of these consoles probably would had to be done on per game basis.

Per game basis? What? The library is included with the game, so you just execute the instructions of the library on your emulator, if the game calls a function of their library.
I think vlj explained the HLE/LLE for PS3 quite well.
HLE in RPCS3 is simply replacing system calls with our own implemented functions.
LLE in RPCS3 is simply loading the firmware files and executing the instructions of the function, when they're called.