I would also love to have some sort of a variable tone of vario.
This is the last thing missing to a perfect transmitter.
The implementation like in Opentx would be a good choice in my opinion.
(variable Tone low for sinking and high for climbing, optionally silent in the center range and optionally complete deactivated by a switch)
This should work also when DFPlayer sounds are activated.
Unfortunately i´m a bad coder....
Werner