I agree in some ways but for me, probably the biggest potential benefit is that it dramatically improves the ability to return to work after a career break for

I agree in some ways but for me, probably the biggest potential benefit is that it dramatically improves the ability to return to work after a career break for maternity or family caring responsibilities. We know that this difficulty is one of the biggest reasons we don't see more senior women in many careers; larger corporates have started putting in places returners programmes specifically because of this. The "old" way to deal with this was part time working. But in many careers the truth is that returning part time simply means being paid 80% or 60% of a full time wage but with close to full time hours and responsibilities. WfH 3 days a week opens up the possibility to manage a full time role together with some care responsibilities when returning. In that way it's potentially a huge change for the better.