A new way to transport items and to build bases (now with filters).
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
chests that can be moved without assigning a function. especially good if the production is far from each other.
through combinators or something else
idea 2. to make energy consumption - that would not be cheating, but more real.
I think that smart chests should be used only at short range and should be combined with Trains and belt to go farther.
I did not catch the second idea. Do you mean the the chest should consume energy ?. Belts don't consume either.