I keep coming across reports of rectangular huts from the Neolithic to the early medieval period along with roundhouses and round huts in Britain. If the trend continues we won't be able to regard roundhouses as THE housing style of Britain. I did wonder elswhere whether the classic roundhouse wasn't a status building of some archetypal Lord of the Manor while rectauglar house dwellers lived in villages. if these villages were located in the best spots then they may well be obscured by later villages also planted in the best spot for a village. See, for example the lack of Romano-British villages. I did view one on the Wiltshire Downs that had been deserted and thus preserved to some extent.
The relavance to bushcraft today is just what is the ideal shape for a dwelling made from local, natural materials and can choices made be applied to interpretating excavated remains?