All theseelite npcs had to get to their rank by murdering thousands of other, also ranked ships(who in turn had to murder quite a number as well). It seems(unless npcs are cheating with their ranking), for every elite you kill, you can mark death of thousands other npcs, including ships. I don't think even entire bubble could produce so many ships and it is super unrealistic, that we meet so many ""elite ranked members of pilot's federation"" every day. Pilot fed ranking should be reserved to players or kept super rare. Instead we could measure npc threat by their bounty or number of attributed kills or whatever.
But of course, Braben thinks that being interdicted because of 10 tons of landmines in T7 by elite fdl is what players enjoy.
How come, we do not get piracy missions of the same type: Hey, this evil elite trader is carrying 30 prototype superconductors. Kill him and bring us cargo?