the spawn-rate in null-sec appears to be broken. I only found two sites after an hour of warping through null-sec. Out of the two sites I found, one was already half run.
I was avoiding the busy systems and routes, but I didn’t even see a site for many tens of minutes.
My suggestion: If you want to make certain items scarce, please think about changing the drop rates. Don’t just make the entire sites scarce so that the “content” is to warp around in a battlecruiser. That is just not fun.
This is why we want to post this feedback here. Maybe CCP reads it and will take it into consideration. I saw two sites in my life in the very beginning of the event. Every since then I haven’t seen a single site. I was warping through null-sec for a couple hours to find a single one. I did not find a single site recently.