I've observed lately a new trends employed by developers, most of the coins are now ERC20, the first was eBTC, followed by eLTC, now eDASH!
Who can predict the next ?
Eripple, ENEO, Exx, Exxx and tons of it
I wouldn't really say its a new trend as Airdrop coins on Ethereum chain is being done quite some time ago.
I would say it started to get hype is due to the successful implementation of eBTC on the Ethereum chain
If not mistaken eBTC is 90% airdrop, i am not sure if devs is in the 90% or the other 10%.
If you take notice, in the announcement of altcoin thread now. You can see that most new Exxx coins are opened up by newbie post. Everyone wanted to distribute the 90% to public, keep the 10%. Hope the hype gets the same as eBTC, sell the 10% they own.
So aside from eBTC, guess the other would fail real hard unless proper implementation of technology is applied