I've had a debate with the creator of AE about that. This logic takes up 2-3 blocks per item you want to supply. That's just not acceptable in any reasonably-sized network. A Logistics Pipes supplier can control up to nine items with one pipe. Even normal Buildcraft pipes can have additional logic significantly more complex than a level emitter without having to add a single block. AE level emitters are, as far as I'm concerned, of very limited utility.would something like this work? http://ae1.ae-mod.info/Subnetworks/Supplier/
I'm not sure why you'd want two separate networks to be able to see the same inventory. That seems a bit redundant to me.
Of course this would all be no problem at all if AE would answer Logistics Pipes' crafting requests.