Ja.

No, they disappear. Or, some of them do anyway.

Yeah, that guy is one of the easier bosses, but the second time you fight him is horrific.

To get to that area, go to the Patella exhaust, and walk all the way down to above the Battle Scar (or whatever it's called). Go all the way round until you can slide down. Some platforms should have collectables on them, then you're in the right place. One of these little sticky-outie bits is hollow. I think it's the third one down, but I'm not certain. Walk down here and you hit the Machina Refuge. Do these quests now. And the "To my loved one" quest series on Digit 2 links to the woman here. So do that! 

You want to know what's unfindable? Ice Cabbages, Rainbow Slugs and Black Liver Beans. Crazy stuff. And you can't trade for any of them!

And you've got to use spoiler tags soon.

Really? I could swear you could miss some...

I suppose it's because you can't do some of them because of areas being locked out until certain quests are completed, or because it took so damn long to level to a point where I could fight the enemies there that I forgot.

Yeah, that's what i was afraid of. I heard the area becomes infested with high-level Telethia, though if they really are that high of level you could be able to fly under their radar. The problem is, some of the Alcamoth heart-to-heart's are pink-heart level (at least one of them is), which is a ways off for me as i've only managed to pink-heart Shulk with Reyn and Sharla, though i'm close with Shulk-Seven and Reyn-Sharla, so i'm going to need to get there much further down the line.

You should have Pink between Riki/Melly I'd say, or Shulk/Dunban. I don't see why people like Reyn and Sharla. They're the worst characters!

And I won't say it again, but use spoiler tags! Not everyone wants to know that it becomes inested by Telethia. It's qute a big deal!

Right, i suppose that one was valid. Not sure why you're spoilering out Jade Face, though. It's not like the real spoiler of who that is could be derived by giving the name of the Face.

Riki and Melia are my next targets for getting up. Both of them are green with everyone except Shulk currently

I suppose. But people may not want to know that there's other faced Mechon, is what I was getting at..

Perhaps try out Melia-Riki-Seven as your party? A Toppler, a Healer and a Dazer Its a good combo. 

And the world's end isn't nigh. You have 2 more large areas, a short area, lots of cutscenes and the option to finish anything in the timed areas before 'the reveal'. So I'd not worry about it for now. You should be around 62 as well.

Aye, i just haven't used Dunban for a while for much of anything, so i'm going to try leading with him, whereas i've been leading with Seven for a while and want a bit of a change of pace.

Some of these guys up in Agrinatha are tough, even standard enemies. I may have some time of puttering around here, which i suppose is for the better, because that puts me up against the Great Change.

I've isolated it to three Heart-to-Heart's in Alcamoth that i'm not quite ready for yet, one of which is going to take a damn long time (Reyn/Melia to pink. Melia's affinity so far seems strongest with Shulk and Dunban).

I've got everyone to green, as i said, so now it's time to focus on the two most green: Riki and Melia. Melia's advancing a bit more rapidly, but i want her and Riki to blue before i reshuffle my party away from Dunban/Riki/Melia (which does a tremendous job at rapid enemy killing, but has trouble dealing with high-damage enemies)