KurakilSakashiroDeposits in color-coded terrain wouldn't be a bad thing. Need sulphur? Look out for pink mountains!
I always found the RNG-based distribution in Horizons slightly annoying. It was such a time sink.
Whatever they do, I just want it to be consistent and make sense. I know that's asking a lot...
It is very consistent in Horizons - you go to Crystalline Shards and after 20 min in srv you have highest grade maxed. In Odyssey you need to use heat map and when you land the features are scattered miles away.
Same with geological sites and so on. Horizon's sites always have 3-5 needle crystals that will drop best grade.