I think someone below me said it best. You can set all the rules you like, but in the end, "cohesive teams will self organise" to make it work. We didn't have

I think someone below me said it best. You can set all the rules you like, but in the end, "cohesive teams will self organise" to make it work. We didn't have to set any guidelines, we just did what was needed. If that meant we could fly 5 days a week at home. Fine. If, when lockdown easedup, it meant choosing to come in 1 or 5 days a week, we self organise towards that. And it's fine. Our team proved we could do that over 2 years, so the sudden yank back into the office was a slap in the face, and destroyed our team. I'm still bitter about it. Just know that if that's your policy, that's what you're risking. It may not manifest as quick as it did with our team, but the internal cracks will be there that you'll need to manage, if you can at all. And I don't agree with your "worst of both worlds" wasn't our situation. We were all in agreement about things would be and it worked. In that situation, you declare that as a core part of your organisation and new employees can choose whether they want to be a part of that or not.