From my experience the biggest pain point gets the least amount of discussion in this post and that …

… From my experience the biggest pain point gets the least amount of discussion in this post and that is the client landscape. I'm on iOS so I tried Monal and Siskin IM as my primary mobile clients and Movim/Dino as my desktop clients. While I truly appreciate the effort the maintainers put into these tools I have to admit that the UX for Moanl and Siskin IM leave a lot to be desired and if you're used to something like Whatsapp or Signal it will prove a significant barrier to convincing friends and family to adopt your new platform. I frequently encountered UI bugs and missing features using the iOS clients and for the life of me could never get notifications working reliably on mobile (a constant bug bear for users in the Siskin and Snikket user base). For calls and texts on mobile, I don't think I ever managed to get a reliable notification unless the application was open on the screen on iOS. This meant that I frequently missed important calls or texts when out and about. …