It would be nice to speed up the shrine of heroes for a better experience.
I suggest the following ideas:
-When you redeem all favors, you can put them all in screen like daylies and weeklies, but including the heroes exp and level up, in addition to the rewards.
-A quick autofilling button for all shrines, or at least for each shrine, priorizing the minimun required for the highest success chance possible. With that we dont have to put a favor one by one. Of course being aware that we might get some usefull heroes busy.
I hope this helps, greetings.