Edward Tufte tells us that we should strive for information-dense, multidimensional visuals. Bret Victor says, "What he said," and adds that these visuals should exploit the magical potential of dynamic displays.
As several have remarked, the principles in the OP tend to yield low-information interfaces. Colors, sizes, and spatial relations are not used as variable axes because they are subservient to visual appeal and "responsiveness".
I suspect that the Tufte-style displays (besides being difficult to craft in the first place) are difficult to suit to doing a lot, and the "material" style visuals are difficult to use for conveying a lot.
This has inspired me to work on an "almost-almost-flat" design that is high on information and affordances, while teaching itself.
As several have remarked, the principles in the OP tend to yield low-information interfaces. Colors, sizes, and spatial relations are not used as variable axes because they are subservient to visual appeal and "responsiveness".
I suspect that the Tufte-style displays (besides being difficult to craft in the first place) are difficult to suit to doing a lot, and the "material" style visuals are difficult to use for conveying a lot.
This has inspired me to work on an "almost-almost-flat" design that is high on information and affordances, while teaching itself.