> Have you ever had to "now click on the left... no, up a bit. No go back you were just there. It's the third one from th... I'll just paste the link in chat" when you were standing next to someone's desk?
Yes.
I resolve it the same way in person as I do remotely, either by pointing at the screen, asking for (and receiving) control of the mouse and keyboard, or both. If you don't know how to use the features of your screen-sharing software that permit this, you need to learn them. If your screen-sharing software does not have these features, urge your company to switch to one that does (or just switch to one that does, if your company policies permit).
> People actually pay attention in meetings.
I've seen no difference in overall meeting attentiveness in the switch to WFH. Perhaps I've been blessed to work with unusually competent and mindful people.
> Spontaneous conversations are easier. ... You get to know colleagues better.
I don't, no. If anything, spontaneous conversations are way easier remotely, as most of the "water cooler" conversations in the office happen in large "off-topic" channels. This is really good for knowing what's going on at the company, because it massively expands the audience for chatter, gossip, and unofficial news from just a handful of people to the entire company. Plus, it's async communications, which means that you don't miss out just because you weren't there.
> Whiteboarding ... is way easier.
This is true. Most folks don't have cameras hooked up to their whiteboards (or even have whiteboards!).
> [B]rainstorming is way easier.
Disagree. Virtual post-it notes and a shared text document of some kind, plus a group voice call works great.