That one can be necessary for oses which provide their own scaling algos in their default desktops and uses icons which size is big/small, but user rescale them to fit to his needs.
That can be done internally in dopus5 as well, as one more entry in the main Environment->Setting list (i.e. now it only Icon Display and Icon Settings, so add Icon Scalling). Or, add it to the Icon Display, if there is enough room for, as well as if we will only need ON it and set the size.
Of course, if anyone will be brave enough and add different algoritms for icons rescaling, there can be also options for choice between algos when "icon scaling" will be turned on.