Given the space constraints, I think the best setup would be one DB25 port and 2 combo XLR/TRS/TS ports. Ideally they would all be separate for 10 total channels, although could also make sense to have it work like the existing DB25 and XLR inputs where they overlap. For setting gain and toggling phantom power, perhaps a new section could be added to the H9000 SETUP panel in Emote.