I think a general computer vision and image processing community would be a great addition to the instance. They are rapidly advancing fields that needs a community that can be a place of discussion. There can be discussions on the theoretical side, the research side, the industry side, and the hobbyist side. Furthermore, it could work with other communities, like actually useful AI, because of the increasing use of deep learning in both fields. Users could share helpful implementations of algorithms, ways they been using new state of the art techniques, how the classical method still works just as well, and more.

url: cvip name: Computer Vision and Image Processing