re: no feathers on pelicanimimus

[Nick Longrich <longrich@phoenix.Princeton.EDU>]

  I was under the mistaken impression that the soft-tissue remains were
just from the head and neck. This sounds like a serious blow to insulated
theropods. It is possible to salvage if you want to be extreme- there are
things which have secondarily lost (most) hair such as porpoises and
hippopotami, but that's stretching it, and an absence of insulation on a
small theropod so close to birds puts a big question mark on an insulated
Sinosauropteryx and mammal/avian style endothermy in my mind. 
I won't pretend that I am completely objective and that this isn't a bit
of a let-down. Any thoughts on what is going on here, the implications,
etc?