A little hyped for Battle Network Collection. That show introduced me to the whole AU concept. When it came out, I didn't even know that Mega Man was a robot. I love that they just said "What if Mega Man, but AI?" and just proceeded to turn it into Tron-Pokemon.
The other two I love is the whole Steel Ball Run concept. Seeing major characters that were established throughout different eras in the original timeline, only to be shuffled around is neat lol. It's also cool that since these characters aren't the same ones from the original timelines, their stands operate differently. It reminds you that they made completely different life choices.
Kingdom Hearts is a big one. Dialogue aside, I love the way they use the properties given to them. Disney characters play different roles whenever they appear in different properties... just like Final Fantasy characters. They double down on the whole "fairy tale" aspect. The Final Fantasy side specifically. I love seeing some characters appear in minor roles, and then when I play the original games, I realize WHY the character was given that role.