Thank you guys!
I am continuing with the "Gates and Walls" set now.
These will be the wall modules.
And there will be a couple of gates (small, medium and large). Here you see a sample configuration showing almost all.
Besides the more elaborate gates there will also be a simple version for each size (like the small one in the back)
Today I was able to adapt the roof for the 6x4" size.
So, slowly, slowly, it's coming together