i like integrated buildings...use of materials based on many factors including
local vernacular and resource base...what is in abundance? carpenters or masons? for materials is there forest, clay, rocks, sod,
straw?
but in general i like round
wood timber frame construction with strawbale on the north, cordwood on the east and west and earthen or stone walls with extra glazing on the south...
whats your latitude?
alot of the actual design would depend on the seasonal incidence of the sun through the year on your building location
also how big? is this for a family or an individual?
i would be a little hesitant with earthbermed beyond the arid sundrenched southwest considering annual groundwater fluctuations and difference is daily sunlight averages in other parts of the world