An important part of the Nearness is that the jacks are laid out in a single column, to represent positioning within the stereo field. Off the top of my head, the best 1U layout I can come up with is similar to the Buff Mult 1U, but with a single input jack height-centered at one end (as the dead-center input), and the two output jacks at the opposite end. Not as elegant, but effective enough I suppose.
Nearness also lacks one important feature - CV control of panning. But thanks for bringing this module to my attention! I have been considering the importance of having panning within the rack I’ve been planning, even without CV control (current offerings with CV control are all way too big). Such a small module would make it easier to add.