I'm sorry, but I'm going to have to veto the use of Jirel race as they're in hiding after the SBY2199: The Ark of Light movie. In the Series it is hinted that the the remaining two survivors of the Jirel Race were in Gamalis control, but one died trying to subdue the Yamato, and the other was killed by Desler.
Since the others are in Hiding, they are unavailable.
Another reason for not allowing the character is that the Jirel Race has power over the mind, and can influence people's perception, and actions.
For the Iscandarian Race, there is only two left: Starsha, and her sister Yurisha. Sasha was killed bringing the wave motion core to Earth at the beginning of the Series.
So at the moment, there is only 3-4 races that can really be utilized at this point:
Gatalantians (Cause this takes place after the White Comet Empire war)
who Schulz's race was.
Isnt this series from the guy who did the captain Harlock series? Trying to remember. But okay jirel it is.
Not only is it made by the same guy, but Space Battleship Yamato is actually of hte same universe as Captain Harlock, Pirate Queen Emeraldeas, and Galaxy Express 999. It is just that Yamato takes place about a 1000 years before the other series.
So hintings, and Elements may make an appearance in the story.