From an interesting interview with Bill Dembski, of intelligent design fame/infamy:
” The reason we put the adjective “intelligent” in front of the noun “design” is not to stress that the design we find in nature is optimal or good or morally acceptable. Rather, it is to underscore that the design we find in biology and in the universe more generally is actual. Richard Dawkins opens his book The Blind Watchmaker by stating “Biology is the study of complicated things that give the appearance of having been designed for a purpose.”
For Darwinian biologists, all such design is merely an appearance. The “intelligent” in “intelligent design” underscores that we’re not just dealing with an appearance of design, but rather with actual design.
So while the question of suboptimal or bad design may be interesting, it is not central to intelligent design as a scientific program, which in the first instance is interested in looking for evidence of design überhaupt. …”