Yes, an aspect of my post i did not make clear is the concept of 'Flow'. Too much going on can also mean the look is blocked into separate sections rendering the look choppy. Your look in the pic has great flow to it. My eye would immediately go to the jacket and the rest of the items complement that focal point.
I agree. If the "sections" don't communicate each others, the outcome surely lacks the "flow." To me your concept of "flow" sounds a matter of harmony, and it can be adjusted by finding optimal contrasts. Neutral colours prevent the overall outfit look clownish. The reason for asking about burgundy was that sometimes I wear black pants. Some say you should never wear burgundy shoes with black trousers, but I'm not sure about that. Instead, there are certain (dark) browns that don't match with black. However, as for my case, the discussion here led me to go for brown. Not too light, not too dark.
Flow is, as you say, harmonious, pleasing to the eye. Black is often avoided to prevent your perceptive observance of looking clownish, but if you follow the flow as Belfast Boy suggests, you get an appearance that you might be surprised by.
