Glad to see you still with us Superbananaman! We can only hope for Shadow Spectres one day. I am still crossing my fingers for Warp Spiders
Good question. There are probably a number of ways to do this perhaps some of them more or less lore accurate (this would be beyond me.) I would recommend looking at this page if you want to create something new and working with the language constructs. http://wh40k.lexicanum.com/wiki/Eldar_Lexicon
I plan on following the path of the Banshee! And if not then, I shall follow down the Warp Spider path, I look forward to fighting with all my brother's and sisters. As for my undecided comrades, I recommend you look into seeing all of the guaranteed classes at launch for each Faction (Non-Heroes), that way you can get an idea of what you'll be allowed to play on a frequent basis. ^.^ P.S. That New Avatar xD