I wish Phoenix would have the option to install it without the closed source code that routes messages through Google.
People have been asking for this for literally years now so it can go into F-Droid. People have even offered help with the submission process. https://github.com/ACINQ/phoenix/issues/152
And, yes, I know there might not be any sensotive information that goes through Google, but many people (myself included) do not want to rely on Google. For anything. Full stop.
#Zeus has the same problem: it's not good enough to get into F-Droid.
Whoever levels up their game to get into the stock #FDroid repos first is going to get a significant boost in users and popularity.