It takes time to determine the orbit of a minor planet that far away, which is probably why it has taken so long to get to the naming bit rather than using the designstion it was given back in 2007.
Based on the name opions given, it's a classical Kuiper belt object rather than one which crosses Neptune's orbit, and the naming convention is that they are given a mythical name not necessarily taken from Greek or Roman mythology.
That should deal with your "perlease" and the reason for those names being chosen. My choice would be Vili, though the others could also be appropriate.