I find the mystery element of this whole thing really frustrating. We don't have the tools to systematically test what variables have the biggest impact on spawns. It's a pointless game of trial and error with one hand tied behind our backs. It should be possible to figure out, intuitively, where to go to find big-game, and it should be risky but profitable when you get there. We're just trying to reverse engineer the spawn algorithm. This is not a fun meta game.
I've tried medium sec, high pop, pristine rings. I've tried systems with high pirate faction influence. I've tried anarchy systems, independent systems, allied systems. The random nature of spawns makes it impractically difficult to figure it out through experimentation. You'd have to spend a decent amount of time in the spawn site, rerolling over and over, just to get a decent idea of the "average" spawn for that site. You'd have to come up with stuff to measure, like number of pirate ships, size of pirate ships, bounty on pirate ships, wings or not wings, time between spawns, etc. Then you'd have to just change one of the original system variables (like security rating, for instance) while keeping all others the same, and repeat the exercise. Just finding candidate systems, given we can't search for places with low security rating, or civil war, or high pirate faction influence, is a hampered, frustrating exercise.
it shouldn't be this hard. It shouldn't feel like blind luck and random chance as to whether we get decent spawns. I literally have no idea where to go, system-wise, for some decent BH action. I feel like I'm trying stuff at random, getting a decent spawn one night, convincing myself it's all about "property X" then going back to square one the following night when i get nothing but sidewinders.