The polar opposite
describes a system which is so devoid
of useful features
as to be, well, useless
Feature-barren systems arise when designers believe that powerful features are too dangerous and must be removed,
or when marketeers believe that useful features are profitable and should be sold separately, or when a system has been rushed to market before it's finished,
or when a system's designers have no imagination whatsoever (or are hamstrung by ultraconservative, unimaginative management), or by some combination of these stultifying factors.