I was playing with a friend a few months back and he did drop into a CMB with 40t gold in his cargo (he'd forgotten about that) - even before I could drop in on his beacon he'd lost his shields and was runningYou're right. I was just on the "wrong side" of an ATR visit the other night in my Corvette and decided to make a discreet withdrawal.Taking fire from 6 or 7 ships at once, with more popping in, was a challenge. Sure, I could blast them out of the sky, but it was "death of a thousand cuts", and more kept coming. I found a new respect for the Notoriety system.
There are plenty of challenges if you go looking.. Try a CNB with a ton of "gold in the hold".
Ditto for a HazRES. It's a little harder in a HazRES, since you have to break the rings mass lock before you can jump out.
AX/Bug Hunting is another, but never appealed to me because of the AX specific builds that were less effective against human ships.
Plenty of challenge in the game if you are in 'the wrong ship' or have worthwhile cargo!