Cyphre

You get it after completing Sashila events and flying to route 9 with Alexandra's brother.

No, but you can Fly there. The trains are operational again after you

I absolutely agree about Cosmia for Fairy type leader, and also think Deagan will come back as a Dark type leader. As for Steel, obviously it's still Saki, although i can imagine you dealing with Thomas in process. Dragon so far is Damien, and there is no reason to doubt that. So the only complete mystery is the Ground one, which is coming next anyway, but i suppose it will be a new character, as the only one fitting i remember was Hiyoshi mayor and his Gloria, but he must be an old man at this point if even alive.

You can definetly catch Hypno, which is fully evolved pokemon, on Route 2. There are some other fairy types, if i remember right, you can also meet Dedenne, although he is pretty rare, but he is also a fully evolved pokemon at this point. You can also get Munna in Gearen. Also you can get Pachirisu in Gearen, use Nuzzle (level 19, guaranteed paralysis) on someone, and try to setup on this mon.

Yeah, there is a building nearby, where you can talk to a trainer who abandoned him. He is the red guy with blonde hair. Afterwards you can talk to him and he will run away, you will find Buizel again in the eastern part of the city, there will be a battle with few level 7 or smth pokemon.

Just progress in the plot a bit.

First you need to complete the art sidequest. You go to the gallery, talk to director, then go into Judicial district and talk to the artist in one of the houses. Then you come back into gallery, then you chase the thief into underground, battle him and take the portrait. I forgot who you need to talk to to get the key, but you talk to that guy, go to the house, key gets broken. You go to Akuwa town, fix the key with the Locksmith with 2 Light Clays and 1 Hard Rock (most people get them from mining) and then take fixed key to the house. And finally you hand the portait on its place inside the house.

No idea, i just picked random fairy girl and talked to her 30 times.

You can talk 30 times to one person, it worked for me. Then come at night to the destroyed tower and place the Odd Keystone.

You either get it from the theater girls on Route 9, which is very-very late, or mine them with a mod pack, it added new stones and fossils.

Yeah, the difficulty heavily depends on your current team and playstyle. I've replayed Rejuv like 5 times, and every time my experience was different. If anything, Amber is definetly one of the consistently hardest, since her field is ridiculous and even getting rid of it not that easy.

So, the last few times i've been here, i always didnt bother with this, but this time i sold all my Casteliacones after picking up the one near her, made it Snow on the weatherboard, it drove away customers, i bought a dozen of Casteliacones, and tried to give them to her. She still say i gave her the one that she dropped. It is annoying and bothers me. Is there any way to give her a normal one?

Dunsparce, Stunfisk, Unown, Castform, Luvdisc, and chad Bidoof to brighten up the situation. Have fun.

If you noticed anything else, please share.

Yeah, on the small island to the far right, with Magnemite.

Yeah, we cant, same thing.

Safari Zone actually works fine for me with the mod pack.

I actually dont have anything like that in my Mods folder, only learning egg moves and waiting icon.