That dimension being the Aether. Recently aether relaunched with full forge support which means all forge mods can work with the aether. Problem is the aether is a different world when it comes to everything. I was thinking of a addon to IC2 that would retool the machines to work in aether. For example, take the macerator and rename it to something that sounds aether-ish, give it a new recipe that takes into account the aether based materials. It would not function outside of aether and could macerate aether based materials for further production. Creating a set of retooled machines would really take it to the next level, but also power has to be addressed. Ambrosia is the aether's version of coal, so a new generator would be required, and possibly re-tooling the solar panels to accept energy from the aether sun would be required. New machines could include a electric incubator for growing moa's and the electric freezer.
I would post more, but I am a rush atm. I could sit down and get more detailed with it.
the mod is located on http://www.facebook.com/AetherMod
and as far as I am aware they are NOT using MC forums at this time to post their mod up.