You put a lot of effort into your post, but as posted in your pain points thread, the devs really don’t like these really long feedback requests. 
Makes me sad.
The things that bothers me the most about Explore are the (lack of) frequency of mythic battles, the amount of tokens given out, and complete lack of incentive to use hero classes (lack of XP or benefits) … it just shows how weak many of the hero classes are.
Doing a full cycle without being rewarded a Mythic battle on the max difficulty just feels obnoxious. Congrats, you beat the mini-boss and earned nothing! … go again.
Congrats, you repeated that cycle and beat the Mythic battle! Enjoy 2 tokens of a lower rarity. 1/9. Yay.
Remind yourself over and over you’re playing explore because you have to choose a difficulty each and every time you want to start a cycle, then have to be reminded you’ve unlocked a mini-boss and a mythic boss… for the 1500th time. Yay. Oh, and enjoy having to open the boss chest after beating a mythic boss just to waste more of my time, instead of just giving it directly after a mythic boss.
Also, 1xp for beating a bunch of supersized enemies. so worth it. Even 2xp wouldn’t feel worth using any fragile hero classes. (so most of them).
This entire token process is obnoxious and I have to be reminded constantly I have an extreme lack of Token of Anu or Token of Nysha to show for my efforts in explore.
I think Mini-bosses should start giving tokens too, even if its just half of the Mythic Bosses.