Coming on-site once in a while isn't only not unreasonable, but an incredibly good idea. Ought to be well-structured to be productive. My old employer used to

Coming on-site once in a while isn't only not unreasonable, but an incredibly good idea. Ought to be well-structured to be productive. My old employer used to set up a full day of 1:1 or small meetings with folks, end-to-end with short breaks in between. These were pretty informal (often walks) and cut across the company (not just my part of the org).