Recently being into Fengshui I believe what we have done in the garden encourages a better flow of chi (气). A curved border makes the garden more interesting by leading the eye from one to the other. Is this what you call chi?
Curved border makes the garden less structured creating better flow
Repeated uses of the same plants create continuity (eg. Korean Buxus and Dwarf mondo grass)
Feels so much better without the need to step over buxus into the shed. Is that what you call better chi? Unfinished garden beds - Ajuga, Lamium and dwarf mondo to be repeated here to provide continuity.