[adrianhoward]

I'm leaning towards thinking firms probably should have offices, and that most people should be in the office at least part of the time. But I would take a pretty laissez-faire approach towards it, I think. Provide offices, but give people fairly unlimited freedom to work remotely or come into the office as they see fit.

That sounds like a good idea.

I'd maybe consider running some experiments too. See what happens when you have everybody work in the office for a month. See what happens if you have everybody working remotely for a month. I've had clients try things like that and be surprised by the results.