Re: Size: I understand your request, but please keep in mind that the size of the MIR Icons is not just an abstract thing, but it actually mimics real distances. When you change the stereo width of a source by means of the Icon, you in fact define the distance between left and right signal on the virtual stage.
Re: Groups: Yes, it's a real PITA that Groups are not available in MIR Pro (only in VE Pro). Please send an official request to firstname.lastname@example.org, too, because I'm constantly told by VSL software engineers that "nobody needs this, because nobody asks for it". :-P
TIA and kind regards,