We're using the mixer in a TV studio environment, for live & pre-recorded broadcasting. We once had a guitar in the studio — but only for about 15 minutes for an audition, which we didn't record anyway. On the other hand, we have camera audio, phone & Skype calls, and use audio & video playback from multiple sources, all the time. Almost none of the icons in the software have any relevance to us (hell, there isn't a playback icon of any description, unless I'm missing something)! I'm sure we can't be the only people on the planet using PreSonus/UC Surface in a video environment... Even if icon editing/adding is complex (although I don't see why it should be, necessarily), is there any scope for a handful of relevant icons to be added?