Maybe it was just my rather questionable memory, but I thought there was supposed to be some sort of GECK extender thingie, like the http://oblivion.nexusmods.com/mods/36370 for oblivion?

Or am I mistaken?

The Geck PowerUp seem to be something similar (http://newvegas.nexusmods.com/mods/36290 / http://newvegas.nexusmods.com/mods/41642).