i don't know man, but i think the only other thing would be a Mortivore or a Horde of Boggarts ... maybe some token creation for the sac engines, so Dragon Fodder , Goblin Offensive , Empty the Warrens , etc cards.
i'd love to be more help, but my goblin EDH has nowhere near your level of rares. :P you've got just about everything that's the best in that deck...
Thanks for the help. These are some good ones I can use. I am missing some bomb rares like Goblin Lackey and Goblin Sharpshooter which cost too much in my opinion.
yeah, but honestly, a missing lackey isn't going to change your deck from "real good" to "super awesome".