Can we message other UDisc members?
Not within the app, however there is a feature on this site where you could attempt it. But my guess is they’d have to be registered here before you could send messages.
Do you think it’s something that can be done?
It would be nice to be able message someone on the leader board and send them an email or something and challenge them to heads up match. And you could turn the feature on and off depending on your preference.