I think, the point is, that there was a time where industrialcraft with its macerator offered a unique method of processing ores more efficiently. others adapted this method in their own way, like for example the pulverizer from TE.
if someone asks, which mod would you use as the single mod in your game. that doesn't work anymore. several mods just fit into each other and turn vanilla minecraft in something new and rapidely changing.
the energysystem of TE is, as far as I see, more or less a hybrid between the IC2-system and the BC-system. the energysystem of BC, but with additional storage-units, so nothing is wasted (which is the IC2 approach). maybe the MFR-approach would be best.
use your own energy network, and detect if your system is connected with BC-machines or with IC2-machines. convert the energy to the used energy of those machines (maybe with the same ratio as MFR uses, just to prevent positive energy loops).
this way you have your own system and the ability to power everything else (so people aren't upset that there is a new system that isn't compatible to anything else).