True modular buildings should be easy to detach, disassemble and assemble. Should come in different sizes, specs or materials to cater for the needs of all economic classes without compromising on good standard. There should be consideration for nomads and offgrid/remote living.

 Should be privacy focused to solve the needs of people who prefer not to share thesame space with the rest, or don't want a communal lifestyle. I think such lifestyle is more suitable for people who share thesame belief and understand each other really well