Lately I have been thinking of some new ideas for ic2 and some of the ideas I came up with is a research system like thaumcraft to unlock further stages of ic2. Say you want more energy storage so before you have the recipe you would need to research in storage. Or if you wanted Quantum armour you need to start researching in the Suit category. I think this would make Ic2 more fun and not as hard to get to top tear items.
One other idea I had is very small but very useful. It would be a charging chamber that you could walk in to and all energy storing devices like Quantum armour or lappack or a diamond drill would get charged. Please rate this good so the ic2 developers can see this