Voltage, Amperage, Wattage and Resistance (limit) should be implemented in my opinion.
Wattage : EU/t - Total EU per tick transferred, this is what the EU-Reader shows.
Voltage : "Packet size" (8 EU = ULV, 32 EU = LV , 128 EU = MV , 512 EU = HV , 2048 EU = EV ,[GT : 8192 EU = IV, 1M EU = EIV {Extremely Insane Voltage}] )
Amperage : "Amount of Packets"
Resistance : "% of EU lost over distance"
Dissipation Limit : "Maximum % of EU that can be dissipated through resistance"
Voltage is determined by the average of packet sizes that are flowing through a cable. (two LV packet and one HV packet would result in (512+[2*32])/3 = 192 "Volts")
Amperage is determined by the Amount of packets that are flowing through a cable.
Resistance is determined by cable type, but it is also affected by voltage and amperage.
Resistance formula: (Base Resistance * Amperage* 100) / Voltage , in percentage.
Dissipation Limit is determined by cable type, if exceeded, the cable overheats and melts.
In theory, you can run 2048 EU/t using LV packets in a tin cable, but the resistance would be high, that it melts. Using EV packets reduce that loss, so the cable won't overheat, but the loss is still high due base resistance being high.
So, the more packets flowing in a cable, the bigger is the loss, therefore you can't stack infinite amounts of packets, otherwise you are going to lose more and more energy or the cable melts.
Voltage increase is still useful to transfer energy with less losses however you have to deal with up-down transformers.
Transformers would work similar to the way it did before the e-net overhaul.
Example 1:
2048 EU/t -> Energy Transfering wire -> Input machine
would have 64 times less loss if compared to:
64 packets of 32 EU/t -> Energy Transfering wire -> Input machine.
Example2:
32 EU/t -> 128 EU/4t -> 512 EU/16t -> 2048 EU/64t -> Energy transfering wire -> 512EU/16t -> 128 EU/4t -> 32 EU/t -> Input machine
would have 64 times less energy loss if compared to :
32 EU/t -> Energy Transfering wire -> Input machine
If you want me to further develop the idea of resistance-voltage-amperage-dissipation limit interaction, i will.
Edit : I may have mistaken some names of real-life, but whatever, too lazy to fix.