Yes thanks, a simple GUI is enough for changing te immage on Icons, Wanderer is the best place, with Dopu4 it would be complicated.
Regarding the change of type of icons, on AROS One 68k I use IconType, very simple, just drag the icon, choose the type and click on Convert, also convenient for when you have to operate on many icons, IconType also works well with Dopus4 (other app), see screenshot.
IconType is another tool that is missing on AROS x86 and it would be nice to have it with your new GUI.