1. More to do with the individual or if married couples their ba zi elements to see a preferred Guan Yin figure.
1.1 Unless one is going to be “married” for life to the same home.. then can do do. Else foolish to buy a Guan Yin based on just that home’s placement direction.
1.2 In Singapore, most young couples do change or upgrade a home several times. Do how’s your logic for this? Especially if the future direction may differ from this home that you are talking about.
2. There can be differences in opinions. Some is based on common sense. Some based on preferrences.
2.1 As through the years, some are horrified or felt that it is a stigma to use white. And or some feel that it can easily turn yellowish thru time due to the burning of incense.