Are there requirements already for the said an airdrop? I know that there will be a metamask token but I'm not aware for an airdrop.
It's still a mystery... Waiting for the time to come. 
Nowadays, there are more professional promotion methods, so airdrops are no longer profitable or worth exploring.
Now airdrops are no longer free, requiring some of the community to spend their capital to explore the ecosystem.But the community will lose to Binance Alpha, which doesn't contribute anything at all. Lol
Profitable airdrops are unpredictable—we can only continue to speculate.