Thank you kindly for your help on the wiki. I've noticed there's a lot of new articles. Marvelous ! Keep up the good work.
Unfortunately, I'm a little busy at the moment, so I can't offer more immediate feedback right now, but I will provide it eventually. Soon. I promise.
Just to offer my quick opinion, I think that the less complicated the navboxes are, the better. The idea about sorting the known alien species based on their homeworld isn't bad, but it's already just a click or two away from the navbox, and also, you could simply include the names of the planets in brackets behind the name of the species. As many of the alien species in the RSU are the only prominent species mentioned from this or that planet, I think the nav infobox would get far too long and unwieldy-looking if you made a heading for every single planet. In the case of some species, such as the Jugglers, or even the Grubs, we don't know what their original homeworlds were. The Jugglers might have even been engineered organisms, for all we know, and it's never revealed where they came from or why they're so widespread on random oceanic planets.
P.S. I'm really happy there's also a general Alastair Reynolds wiki now. I actually intended to start one, but I didn't get to it yet and someone apparently beat me to the punch. Either way, good to know there is one. :-)