So anyone know why transfer nodes were totally disabled?
As for the essentia mirror
@Pyure the only use I know for it uses Witching Gadgets, it adds a plethora of minor goodies including a device allowing you to put essentia that's gone through a mirror back into jars making them actually useful. Other minor goodies include such things as a cobble gen, the ability to change biomes, a search bar in the thaumonomicon, microblock support for essentia tubes, armour capable of countering warp, and some heavily endgame weapons/armour with a nifty customization system. A couple of things such as the infernal blast furnace would probably have to be disabled by eh, not sure how well it adding clusters for every ore would work either.