Benefits for early investors?

I invested in ERGO in 2017, and devs said that there would be 2 chains: Ergo and ErgoData, hence 2 tokens for early investors: After-Launch Thoughts and Ergo Roadmap | Ergo
After that ErgoData idea was abandoned, but Kushti said that there could be some airdrops for early investors: Telegram: Contact @ergoplatform

yes, the snapshot is known so will be used. There are some airdrops which will be performed sooner, and they will take Ergo blockchain snapshot I guess
So my question is - should I still keep my old Waves private key in hope that I’ll get some benefits as early investor?