Has anyone done a community airdrop with a lockup? If not, why is that?

Seems like it would solve a lot of problems. Even professional long term investors can’t keep their finger off the trigger w/o a lockup mechanism. Can’t expect airdrop recipients. 

Can combine immediately liquidity with a linear vest (eg every block to avoid cliffs impacting market price)

I've seen two airdrops with mandatory lockups, and the response was negative. I believe offering an option to lock up for extra incentives is much better than making it compulsory.

Trying to get good at this whole crypto thing

One was shuffle, and I've forgotten the other one. I will let you know when it comes back to me.