A good feature would be for the software to automatically send the VarAC version in the first connected TX transmission, this would allow operators to know what features are available to them as the software progresses. e.g. I know file transfer was added Beta V3.
To see this working, head to your live site.
This is indeed a good thing for super users but the average user won't know what is available on the other side. It will only lengthen the hand shake process.... so not at the moment my friend.