Okay, people seem to think donations are the best way to go. I agree. I think taxing Poloniex balances or everyone's XCP balances would be disastrous.
I have created a thread on the Counterparty forums for donations:
https://forums.counterparty.co/index.php/topic,127.0.htmlThe total missing is actually about 6100 XCP instead of 7000, as some people had not yet withdrawn and I was able to deduct balances.
Your donations are greatly appreciated, and as soon as the missing XCP is covered, I will open up withdrawals so people can get at their XCP.
Can we all assume (without obligating you publicly to anything of course), that once the community covers this sum for you, the XCP/BTC trading will be restored on Poloniex?