Every 6 months or so I try pushing it onto "normal" people, and then I realize something is not working quite right. A while ago it was the Signal desktop app that wasn't importing contacts. I also have an issue now where I can't delete/hide a contact from the contacts list in there, even though it doesn't appear on the mobile app.
Speaking of which, I wonder what's their plan for the desktop app, as I believe Google has deprecated those types of apps in Chrome and I don't think it will work anymore in about a year. I've also used WhatsApp more because the native desktop app seems much more reliable.
Then it was messages arriving too slow (waiting many minutes to be "pushed" as a notification, which is pretty bad for a chat application). I think it still has this issue.
The video call still doesn't seem to work as well as the WhatsApp video call. It seems buggy and the connection is not of the same quality. WhatsApp video calls are more resilient than Google's Duo, too, which switches to audio often.
Even the ringtone the video call uses by default is worse than the one WhatsApp uses. I know it seems like a little thing to complain about, and if it was just this one little thing, I probably wouldn't complain about it. But it's all of these together that still stop me from pressing others too much to use it.
I would also like to complain about OWS/Moxie's inability to "build a community". Yes, many cryptographers and security people like the app for the good tech it uses and such, but the organization is not actively trying to build a community or care much for it from what I've noticed. I think Durov and Telegram work on that much more, and it's important. In fact, it may be one of the primary reasons why Telegram is so much more popular.
OWS/Moxie barely even post on Twitter anymore. They release a blog post every few months. It's hard to "get excited" about the app or want to follow them closely too much when they do this.
I think this is also the reason why they're losing/have already lost an opportunity to become the default secure messenger in the Democratic party to Wickr, which is much more active on outreach and stuff like that, even though Clinton's team used Signal in the campaign and they got a lot of good press for it. But they're now blowing all of that away because of their "silence" and non-marketing focus.