What about segwit?
Is returning to poloniex something you are working on or at least being listed on some other exchange beside bittrex?
Thanks for your suggestion on Segwit, Jiggy0001 - lets let the community discuss but its probably best to let Bitcoin test it first and its not altogether that popular so far in that community since its stuck at 25% adoption and many believe that it will be dropped before gaining any real use.
https://bitcoincore.org/en/segwit_adoption/
For those of you who want some background:
https://bitcoincore.org/en/2016/01/26/segwit-benefits/
https://bitcoincore.org/en/2016/10/28/segwit-costs/
As for UltraCoin "returning" to Poloniex - its never been on Polo. UltraCoin was on Cryptsy but most of us know how that ended.
Until UTC gets a lot more volume its futile trying to get it listed on Polo. Polo list for profit from volume. Its more about volume first then other exchanges open up and some ideas have been floated on other exchange options.
I will let Steven and the community comment.
Cheers - usukan