If this isnt stating the obvious, why not simply propose 'contest mode' (replacing stealth mode) which suppresses ID and climb rate, everything else full range, and have done with it?

Stealth mode connotations go away. Awareness is maintained. Electronic leeching reduced..Contest folks hopefully happy (is that possible?)

Work with BGA folks with coordinated approach to the FLARM chappies - will still take a while to work out I'm sure.

Any takers?