Yikes, reading this thread from start to finish was a long, arduous process.
Attention the lot of you!
For the benefit of some people, I'll give my own take on some things. I know some in the past few... ten pages or so mentioned some of these issues, so I'll mention them too. Right now this is solely for the help of people
1. With the Shrine Quests, do NOT tickle the last Fairy of the Fairy Medallion quest for a shard. That seems to be what was causing the Shrine to go unresponsive and the encounter rate to reduce itself abysmally (you could still get into random battles, but only if getting lucky or by pacing for a few minutes at best).
2. It seems right now that beating the Youkootchi Fox before the Gitchinari Fox, no matter if you release Youkootchi or tickle her, will make Gitchinari begin in Rage status. Take note. Not sure if this is a bug or not, but someone mentioned it a number of pages ago, and though Procella responded as well, his implications of what SHOULD happen were different from what ACTUALLY happened.
3. After beating Mammona, the Bebe/Mammona boss music will play for random encounters. Face Honey Bee to reset this.
4. Your Giggle Goblin has a few issues with it. Be wary of everything you do if you use her. Do NOT run in a battle after you've called her. If you do, you'll notice some... adverse effects. Get into a battle and win to reset this. If you lose in a battle before resetting this, you will get a normal Game Over. Under these circumstances, do NOT save, just in case.
That should be it. Just in case, don't try to go back to the Cave of Promised Eternity at ANY time after finishing it. A friend told me his game froze when he did, but I couldn't replicate it, so there's a heads-up.
The Shrine bug is the big game-breaker right now, so avoid it at all costs.
EDIT: Credit to Zerous for telling me of #5 and intriguing me as to a bit more on the subject. What he originally said was this: "If you lose to Honey Bee with the Goblin in your stead, your sprite is replaced with the Goblin, and you'll be at 0 HP." I assume this was from a previous version though because he mentioned using previous versions, and because I got different results from doing what he said.
5. If you call your Giggle Goblin in the anytime fight with Honey Bee and proceed to lose brutally, you will get a direct Game Over. No scene, no nothing. After you (and in the same vein, your Giggle Goblin, though her before you obviously) have been brought down to 0 health, it'll skip right to the Game Over scene.
6. If you go into the Honey Bee fight under the circumstances of the above #4 and lose, you'll be stuck as your Giggle Goblin with 0 HP. DO NOT SAVE, it is very risky. However, you can fully recover by sleeping at the camp site, if you can get there without encountering a random battle on the way (a bit of luck). You'll still be your Giggle Goblin, but at full health now. You will also fully recover if you level your Giggle Goblin up (a bit of a mindfuck if you ask me, since you'll have the Giggle Goblin sprite going into the Arrival Point) or by resting in the Pub. Interestingly enough, you will NOT recover by using the healing Tickle Fairy in the forest. I assume that means that the way Honey Bee and the Tickle Fairy heal you in the programming is different from how the Pub and the Camp heal you. Interesting glitches.
ATTENTION AGAIN!
I'm trying to look into the aforementioned Cave of Promised Eternity glitch my friend mentioned. He and another friend gave me their saves files, and both of their files do the following: when trying to return to the Cave of Promised Eternity, it gives you the option to or to leave. However, for my file, when I go between the bushes it doesn't bring up anything. I'm trying to figure this out 'cuz personally it's bugging me. All three of our files have similarities, and all have differences as well, but I have zero leads and am doubting that items or quests completed have a role to play in what's up with this. I dunno, I just dunno. If anyone else can share their files with me if they're this far in the game and/or give me information regarding what they did inside the cave, etc. and if anything seemed off, I would vastly appreciate it if you could. Of course, I urge you not to try to return because it will give you a white screen if you go back into the cave. You can still move around and bring up the menu, but you can't see anything. It's just a white screen.
Would appreciate anything. Thanks you lot 😀