I found 3 Earth-likes last night. One was even near 2 water worlds. However, 90% of the systems I passed through those 6000+ Lys were either empty or filled with plain pink rocks no one bothers to even look at, let alone scan

Also - if you don't have to, avoid the big black void between the habitable space and the next galaxy swirl. The damn thing has so scarce stars that even with a 36Ly jump range half of my routes end up as "Route unavailable". I was aprox 800lys above the galaxy plane. Had to go down to 0-50lys to actually get my routes to work.