more like 50+%...I thought a DSU could hold 2M items?
I went with the DSU route for storage capabilities in excess of AE's ability ... and for looks as I have a storage monitor paired with every DSU [so I still have my stroage room look]. By my maths, a max-sized AE cell holds roughly in excess of 500k items or 1/4 of a DSU's capability. I didn't know of the increase in server load tho but increased power consumption to me is irrelevant, as I've got 576 MJ/t dedicated to my AE network.
As far as what's missing for me in 1.6 right now...Routers are at the top of the list. In my current build, I have used routers far, far more than in any other build and it's allowed me to keep my AE cabling under restraint with items passing back/forth through tesseracts. In addition, routers have allowed me to round-robin external crafting. The only downside is it adds some time to the crafting. I haven't seen a 1.6 FTB pack released yet that includes Factorization. And, as I understand it, router usage is changing dramatically in 1.6.
I believe it's 2 billion, not 2 million is the storage capacity