Well, as the title says, it is mostly call to make the GUI prettier, because even if in current situation it works okay, it does not resemble any functional GUI from known software. Making it look more "professional" won't hurt, and can allow you to some nice customisation (such as decorators, as shown in concept art below):
Well, as the title says, it is mostly call to make the GUI prettier, because even if in current situation it works okay, it does not resemble any functional GUI from known software. Making it look more "professional" won't hurt, and can allow you to some nice customisation (such as decorators, as shown in concept art below):