Haha, people very quickly got away from the singular like/dislike idea.
But if I'm forced to choose one it's really one in the same for me - the tech tiers. I really do love the idea and I enjoy it when I get past the stone age. I even like the stone age but I feel like it makes the 'good' loot a little repetitive after like 6-7 days. There isn't enough variety there early game to justify how long it lasts in my opinion. But someone replied to me on another thread here and said that a primitive pistol and rifle are coming for A20 so I think that could fix things. And the addition of biome-based difficulty, with better rewards too, which sounds like it's coming could help too.