no you're not hijacking, if a designer wishes to post his own versions, that's the place to do it. There is no official logos yet, I don't know if there will be any, the more choice we give to te PAteam/community (whoever makes the decision) the better. Fubar designer can come up with something too, it's always interesting to see other styles.
I like our idea of having an evocation of one of their ships in the Ter (phoenix) and Cat (spider), I like to see the other races with the same idea.