Anyway, I figured I'd post my prediction roster for the base version of Fire Emblem Warriors.
Bare in mind though it's likely not gonna be to everyone's taste. That's what DLC's for. Basically, I'm going with the Hyrule Warriors method.
Shadow Dragon: Marth, Caeda, Tiki, Merric, Gharnef
Shadows of Valentia: Alm, Celica
Awakening: Chrom, Lucina, Robin, Frederick, Tharja, Gaius, Gangrel
Fates: Corrin, Azura, Xander, Ryoma, Takumi, Camilla, Garon
Warriors: Original Hero (alternatively, Anna), Original Villain
Basically six heroes from each game shown so far, plus a villain. That being said, I kinda cheated a bit and merged Shadow Dragon and Shadows of Valentia, since they take place at about the same time with only a sea separating them.
I also tried to diversify weapon types. Swords, Axes, Lances, Thunder Magic, Wind Magic, Dark Magic, Bows, Hidden Weapons, and Stones/Transformations are all present. Staves were purposely left out since they're not combat weapons, making the only other major weapon types left out Fire and Light Magic (and if they have an original Anna, they can have her use one of these).
As for roster selection, I took into account roster space (as this roster assumes a smaller roster), importance, worldwide release and notability, popularity within their game, and whether or not they have a unique weapon. Take Merric, as an example. He's not the most important Shadow Dragon character, but he's important enough. The fact that he has a unique weapon (the Excalibur tome is his signature) secured him a spot. Likewise, Gaius and Tharja were picked for their overwhelming popularity in Awakening and the fact that they offered unique weapon types (hidden weapons and dark magic).
I truly don't think we'll see characters outside of the Shadow Dragon/Awakening/Fates triad in the main roster (save Echoes:SoV for aforementioned reasons). People may whine about the lack of Ike, Lyn, and Roy, but let's be real...Ike didn't even get into Heroes at launch. He's STILL not in Heroes. If other games were likely present, why not show Ragnell in the teaser instead of Yato, Raijinto, and Sigfreid all at once? That's where DLC comes in.
If there were three DLC packs, I'd say they'd be this:
- Blazing Blade DLC Pack: Lyn and Hector
- Smash Bretheren DLC Pack: Roy and Ike
- Sacred Stones DLC Pack: Eirika and Ephraim
In the event of a fourth pack, I see it being the stars of Fire Emblem Switch. Basically, only Jugdral gets left out here. RIP Jugdral, doomed to never have a western release.
So yeah. Those are my thoughts based on nothing but the thirty second trailer.