The number of tickets...
There are about 60k users everyday on Poloniex.
So obviously... Obviously they just can't solve 10k tickets everyday
You imagine? 10k tickets EVERY DAY?

I'd say your ticket will be answered more likely if:
-You're an old user
-you trade a lot so generate lots of fees
-you haven't oppened too much tickets already
Im an old user (almost 4 years), a lot of trades, one ticket and they delayed 3 days in reply my ticket of Frozen/Compromissed, now I have to wait till they see my reply and unfreeze my account. So 72 hours to only reply my ticket, one important ticket about security. Things are going bad, imagine if you get hacked, you will lose all your funds the hacker has all the time in world to play with your account and laugh at you.