You can always come hang with me, averaging 40 million per 5 minute trip hauling 700+ tonnes, damn NPC's wont leave me alone, I am carrying Silver/Gold/Meta alloys and weapons. Only weird thing I have found is that the Thargoids refuse to hyperdict me, not had a single one.
Out of curiosity, are you flying a smaller freighter? Perhaps the devs changed things for cmdrs in smaller ships, also what is your combat rank? Perhaps that makes a difference, you don't really hear newbies complaining about being killed anymore, just the occasional post.
I know the devs offered traders the chance to reset combat rank, thought that was to force lower ranked NPC's to do the interdicting.
If you haven't had a single interdict in months whilst flying freighters, most people would call that extremely good luck. Especially if you are flying out of lo sec and anarchy.
for example last night I was interdicted by an Elite FAS & Cobra (didn't get the Cobra rank) That was the only cargo run I did yesterday, you earn a little extra cash from the kills to cover any repairs.
Still have the claim in my transactions.
http://i66.tinypic.com/2wnpn41.jpg
I've been playing ED since premium beta and have played Elite since 84. My favourite being Frontier Elite 2.
Admittedly my combat rank is kinda low, because I reset my save a few months ago and I've not really have that many encounters with NPC's to give me a chance to raise it. My combat rank has only gone up from doing scavenger missions where I've shot a few skimmers. I'm currently flying an Asp with as much cargo space as I can get from it, and I use the new trading tools to find the highest profit runs. As I said I wander from system to system, so go to a lot of different security systems during a typical play session. I even take on high paying trading missions, and I get the mission update that says a hostile NPC ship is out there, but usually by the time it gets close I've already dropped into the station area and am well into the no fire zone.
Just to add to my post above. I'm not saying that the NPC's should be a the same level of difficulty as they were in the original Elite, because sometimes the game could feel incredibly unfair when you're minding your own business and get jumped by a small fleet of pirates with no chance of escape. But I think an acceptable ratio would be an interdiction in 1 out of every 5 journeys based on security level, and the longer the journey, like when you're passing through the empty space between stars in a binary system (afterall there's no police out there), should be more dangerous that travelling a shorter distance.