Premise
- Many people from Sydney / Melbourne are considering buying houses in regional Australia: cheaper, better quality of life, easy to work remotely. 
- This also poses a threat to the values of residential and commercial property in major capital cities. 
The issue
- If people are away from the office more than 2 days a week, this damages the long-term dynamic of the enterprise. 
- I.e. those who moved to rural Australia will have to commute to the office 3 days a week. 
- The most important things during the analysis: the patterns of employees’ communications and how people spend their time. 
- The strongest driver of how people collaborate is the office environment. 
- People working remotely copy the patterns they developed while in the office. 
- Replicating face-to-face communications completely is not possible. 
- People spend 45% of their communication time with their top 5 collaborators, can be done from any location. 
- Contacts outside the top 5 fall dramatically in a working-from-home environment. 
- Damage to the dynamic of the enterprise and affects the training experience of young team members. 
- Can be managed short term, but long-term people need to be back in the office, even if for 3 days a week. 

Oh, there's a comment section here.
First and foremost, thank you very much Max for the briefs. They've become my source of inspiration and new ideas.
Regarding the WFH issue, I think it hugely depends on the person and his/her state of mind. I first became working from home when suffering from severe depression. The thought of leaving home was causing a panic attack, but I was able to work in some way. After two years of training, I am pretty much prepared for effective WFH, while working in office distracts me.
I believe these considerations have limits of the applicability based on company size. For instance, mentioned communication only with the top 5 collaborators or training of young team members will have a less negative effect on smaller companies.