This is very very good news. As a heavy Signal user, from where I sit I personally see the following clear needs: -Better group support. Right now, to do a group in Signal you have to name the group, which makes it kind of a pain to create ad hoc quick groups. I'm forever naming them "John Sue Bill" or "Jane Roger Amanda". iMessage, by contrast, just automatically makes a group without a name. You get a thread for th…
I think Group Video would be interesting but I personally don't do video on Signal, nor did I have a hint that it supported this? I thought it was just audio?
Even so it would equally be amazing if they could improve the usage of a Desktop client and / or maybe allow for Tablet support? I don't want to run my texts through Google Chrome, I rather run them through a more stripped down Chrome (Electron, but it shouldn't be too much different!) that wont be randomly phoning home to Google or require me to open up a browser I rarely use outside of work.
I really would love to see Signal work without phone numbers at some point (email as an alternative would open up Signal for Tablets - really wish Signal worked on Tablets) but I may not know enough about the existing structure to know how feasible this is or isn't.
I think you hit the nail on the head about email though. If the Signal Foundation is serious about making encryption accessible by all I think their next big focus should be:
* Making something that allows table usage of encrypted messaging (wondering if they signed something with Facebook and Co that disallows Signal to run elsewhere?) * Make email encryption painless and straight forward, whether they build their own mail client and plugins (please make this AND mandatory no exceptions) or they make plugins for all major mail clients, especially Thunderbird.