Many modern offices nowadays are favouring the "less is more" theme or trend even when space are not a constraint.
If it is of no use, don't put it there ; if it is not necessary to be so big or many, don't make it so.
That is a good guide to setting up one's office with minimalist theme.
I have this to share about the minimalist theme or style in furnishing and setting up one's office :
the main point is to keep every other things pure and purposeful while ensuring the form follows function.