Funny.
Do you sell new EMFOUR, ENG, EM in Hive-Engine too, without airdropping EMFOUR, ENG, EM to Steem-Engine corresponding owners, while you got free HIVE airdrop corresponding to the customers' huge investment for ENG, EM, EMFOUR from Hive HF ?
Who will invest their money to buy your tokens while your business moral is so bad like that ?
The same applies to PAL which seems that you are involved with.
My best expectation is that you airdrop all the Hive-Engine tokens to the corresponding Steem-Engine tokens unless the token issuers are against it for their respective tokens, except for some peg tokens such are bitcoinp, ethereump, etc which are not related to this Hive HF.
At least you should do airdrop the tokens you are involved : steemp (you did airdrop. thank you for it), ENG, EMFOUR, EM, PAL;
There are lots of customers' huge investment put into those tokens.
You got free Hive airdrop for the customers corresponding huge investment, then you should not profit from the airdrop and you should airdrop at least ENG, EM, EMfour, PAL tokens. Otherwise I guess you can be involved in a kind of legal troubles like some exchanges who do not support airdrop for the customer's asset in their custody while they got free airdrop for it.