From my experience of getting other people on Signal, the main issue is that not everyone is already on it. People generally want to use only one app and it attracts them to the most popular one because they don’t need to switch as much.
Secondary issues are:
- No automatic phone transfer (no cloud backups, has to be done manually)
- No large public channels
I might add another one, but it applies to WhatsApp too - it’s crazy that there’s still no easy way to move between iOS and Android…
We need a fully community run password manager with row-level server synchronisation between devices and shared vaults. Maybe a new client for the Bitwarden protocol with Vaultwarden or something new. E.g. 1password’s secret key as a second factor is, imho, their best feature. It pretty much eliminates the possibility of the vault being decrypted due to a weak master password.