ah. What I mean by ‘old community users’ is that the ones been involved with the Ecostem and have been staking Near for some time.
as for airdrops its easy: if you are announcing it forehand and putting a deadline letting everyone to join you simply are rewarding everyone (mostly airdrop hunters with a lot of bots) not community users.
it’s easy to identify ‘old users’ for developers. they can derive that data on chain.