That's a great idea. We might also add Tabletop Simulator into that mix.
As for people being remote, I think the majority of our core playtest group is remote at this point, so no sweat there.
I also saw a kickstarter project where they were streaming video of a physical table, and players were streaming video, so sort of like Roll20, but the table's at the GM's house. That might be an interesting idea, but Antum doesn't use minis ☹️