I've generated multiple test worlds and the deciduous forest and desert biomes don't appear when RoG is made compatible with SW. I know RoG is working because there are moleworms, RoG crafting, etc. I've disabled mods and uninstalled Hamlet, so I'm sure that SW is the issue here.
When I play with RoG only, the biomes spawn but there are no sinkholes in the world.
Steps to Reproduce
I generated worlds with RoG + SW.
This issue has not been confirmed by a developer yet.