Best as I can tell, the registered Version won't get you much more than you already have, unless you want to do animations. Also, the haven't finished the english Version yet. Zircher is a great person to talk to about DoGA (there is a link on the
B5Mod Page).
I also recently downloaded some new parts that DoGA made for Robots & Humans, but haven't even tried them out yet, if they work I will zip and post for y'all.
On top of that, I imported and made some new catalog pages with some new weapons and wings that are usable in DoGA 3 - I will post those for anyone interested as well.