Riot, have you ever considered adding an "amount shielded" post-game stat?
I'm not talking total shield given, but total shield actually consumed. I think it would be a great indicator, personally. More useful than "amount healed" at the very least.
It would help visualize impact that specific champs (Thresh, Janna, Shen, Skarner, Tahm, etc) have in post-game, as well as give a much more transparent balance lever (we all know certain champs get a ton of unseen power from shields).