Our company is trialing/thinking about going fully remote, but then having a few big "meetups/workations" every year. Maybe rent a nice cabin (big cabin) for a month, and people are free to show up for a week or more.

You get a little socialization going, you give people the freedom to choose, you still save money in total AND because the "hybrid" isnt randomly distributed, you might actually get all those "useful" communications happening.