Heroism vs. Farming
I’m not sure how this puts an end to “farming” — it just changes “find these sorts of nodes, press ‘f’” to “find these sorts of foes, press ‘1’”.
Grinding in this game is largely only important for shinies & achievements — it’s possible to play the game without overtly focusing on acquiring particular items. It’s not perfect in this game (far from it), but I feel very little pressure to do the same things over & over again. (Well, aside from the pressure I put on myself to finish somehting.)
John Smith: “you should kill monsters, because killing monsters is awesome.”
I believe the Devs stated it wasn’t feasible to change the Core Renown Hearts into repeatable Renown Hearts due to the old code.
I think the Devs already did something akin to this with Map Event Rewards.
Good luck.