Tu vas faire pleurer Yuna
I'm not saying that "chess" cannot be fun. I'm not saying that the "formal system" and puzzle games need to be banished and those who like them are idiots. I'm just saying that the proportions should be recalibrated, because right now the weight is ALL on the meta-game.
My belief is that if you go back at the roots of the genre, back to the aspirations of the pen&paper games and the realism and complexity of their rules, many of the elements of the current, consolidated mechanics would become suddenly obsolete and superfluous.
The "healers" are just a byproduct of the meta-game we played till today. Watching colored bars move up and down.
If you remove the meta-game mechanics, you also don't need anymore the meta-game GUI [graphical user interface] since one goes along with the other. It's simply another, different paradigm that would be founded on completely different elements.
At the point I've described, the UI becomes just superfluous.