What should we do?[/b] To get yourself ready for the swap Hawala advice to keep the HATs in an ERC20 compatible wallet. Any wallet that gives you a private key will be perfectly fine. In the next days, EtherDelta will let us know if users need to withdraw the funds or they can do the swap on the exchanger seamlessly.
So there still is a chance for Coin Swap at Ether Delta right?

One more question, Let's assume Hawala.Today handles the Coin Swap, You will give us new Tokens and my question here is what to do with my old HATs. They will have no value and cannot be used for trading or anything, what will we do with them?

Why is it important for you to keep the tokens on EtherDelta when the swap occurs? Just withdraw them to your Erc20 compatible wallet and you're good.
As for the old HATs, if they are worthless you can always send them to some ETH address (for example to 0x0000000000000000000000000000000000000000) to burn them. Just be sure you're sending old HATs and not the new ones
