Poloniex almost dead now.
It was in top 10 a year ago - 60th now...
BTW, they will never relist delisted coins.
did the customers flee after buying by circle (GS) in february this year ?
it is conceptually important for cryptos' future.
I believe there is not that less traders trades and volume as it was start of 2017. Yes of course there is less then was in December. Thing is that other exchanges increased they volume, traders and trades. And maybe because of that Poloniex looks like abandoned. But in general yes there was lots of FUD and closing troolbox and need to verify accounts did not helped with get more volume. Right now Users currently online: 4110. If I remember right max was like 20-30k.