I use Terralith and Tectonic, along with Terrablender, Biomes you've gone and Larion, granted this might be very situational, but was wondering if there's any change for better structure blending?

All structures are made with the datapack/json format mojang introduced a while ago, so I don't really have a lot of control on how they spawn. I'll check the respective mods to see if there is anything I can do.