As far as i know it isn't a coin at all, but correct me if i'm wrong
It is just SuperNET
There will be the coins inside of SuperNET, but SuperNET itself is not a coin. Technically it is a NXT asset
NXT AE, mgwBTC and mgwBTCD satisfy all donation options so...
Why poloniex and not NXT AE? If broader adoption only, those not familiar with NXT and NXT AE may want to begin familiarization through the donation.
...especially as you say, this is technically a NXT asset.
That being said, I am exploring some options.