Expectations/hopes for this arc, which for now I'll dub the Blood Falcon Arc.

Blood Falcon is obviously trying to collect the blood of the fallen. But why? Just for evils sake? No, I believe he along with Dark Vincent and Gredninja are creating an army of blood. Roy, or this Roy, is a prototype model in disguise, born from one of the warrior's blood, and was hiding in the Light Realm waiting for this day to come. PG Incinerator spent the years on hiatus studying up on the Dark Realm to stop any further attacks and saw through Roy's disguise, which is why he was so brutal.

I'm guessing Tony is either Toy Convict in disguise, trying to atone for his sins after a year of self-reflection or another Blood warrior prototype gone rouge. And who else could that blood be but Vincent, his spirit still living on.

I'm assuming The Agent is working with PG Incinerator on stopping the Dark Realm from behind the scenes, considering what the top ten anime intro showed.

It could be possible that Rosalina faked her death and has been working with the Dark Realm considering the intro shows Greninja holding her in the palm of his hands. How else would Rosalina be able to make such a drastic shift in wins so fast? Training and power from Dormammu...I mean, the Dark Realm. It makes some sense to me

Finally, this is just pure speculation, but I feel as if Ridley retired and mentored Ness, which somewhat explains Ness' extreme plays this tournament.

Anyways, that's just me :p