Thinking about it...I think in order to simulate the simultaneous voting you'd need to have everyone PM their vote once voting is allowed. The drunk and a few of the other roles might be a little more difficult to simulate, but pretty sure it can be figured.
I don't think there will be a problem with any of the game mechanics. What needs specific timing will be handled by the actual mod rather than the game app. As a matter of fact some of the issues of RL gaming will be entirely negated since there will be no limitations of players' physical placement nor the risk of touching someone or accidental noises.
Pretty sure it would work just fine.
Yep, you're right, everything can just be "handled" by the mod (the pool of 3 unclaimed cards, the changing of any roles, the votes, etc.) and it should work fine.
And it is definitely a huge bonus to not have the RL issues like you noted with the movement and noise. When we play everyone usually is gracious and makes all sorts of noise while each person takes their turn. Banging the table and coughing and talking and stomping and clapping and whatnot. All while they have their eyes closed, it's pretty amusing. I have "moderated" it a few times and taught it/helped teach it to people a handful of times too, so have not played a few times and watched everyone play, as well as played a good amount too. It's fun.
My partner prefers it (at least for now, maybe because it is quicker and more simple and a little less intrigue/lie heavy, but it has also made her more open to/interested in regular werewolf/mafia.)
I prefer regular werewolf/mafia, but, again, definitely am interested in trying one-night forum-style, no doubt! Likely more than once if it goes well, which I imagine it would.