1. All you need to do a remote whiteboard is a microphone and a mouse. This is a great opportunity to create new softwares that actually help collaboration and improve the design process rather than being stuck forever with a pen and a paper.

2. What you call "personal relationship" is, at the end of the day, employee relationship and politic to be promoted. You are in a long term position of power on your employee, which allows you to impose your point of view. Stop pretending to be benevolent. Most new hires do what you tell them to do, it doesn't change with work from home.

3. I think that's just because you are not a good manager (sorry), or your own managers are bad. If you actually cared, you would respect people time and have clear rules that show it. You can send a "have a good afternoon" at 6PM, no one would find that awkward