I’d love to see support for Tor links (.onion) in the home assistant apps. A lot of the Umbrel home server users (getumbrel.com) will likely want this too 
I know this is possible because many bitcoin wallets use this to make connection with your own bitcoin node easy. For example the wallets “Zap”, “Zeus”, “BlueWallet” support this. In the HA app in settings → external link a .onion address could then be used.
All Umbrel users automagically get a .onion address when installing home assistant. This is a community of ~10.000 people that would possibly benefit from this feature.
As a hint for someone that would like to work on this: I think some of the bitcoin wallets that integrate this are open source so code to implement this could likely be found there.
Thank you for considering this! Warm regards from the Netherlands