So I've been working on some cave and underground mesh in Blender, imports to EE, adding physic, and connecting them with EE Terrain with holes at the entrances, it's a bit wonky trying to hide the hole edges or accidentally close the hole when I paint materials, or if the cave mesh being move or editing.

So, I'm wondering if I should make terrain, decorate, and connect things on Blender instead, is there any notable disadvantage? (besides annoying texturing and sculpt tools in Blender)