About Fire Emblem representation. I'm a fan of the series but for now I wouldn't pick a character from FE for DLC. If it has to happen maybe I'd choose Edelgard, the thing is some people that played Three Houses didn't pick her house, and the same problem happens with Dimitri and Claude. The three are very cool and interesting characters, specially their timeskip versions (I love his grown up designs, 10/10), but not everyone has played all the routes that the game offers. I've only played Golden Deer and the 'secret' route but I will play the other two.
With this in mind the most probably scenario if Sakurai picks a Three Houses rep is Byleth. I like Byleth and even if he would bring cool things (whip sword, potential time mechanics, potential gambit/batallion abilities, and more), I'd honestly prefer any of the three main lords, so the solution that comes to my mind is:
1. Byleth as the Three Houses rep but it acts like Pokémon Trainer, where he's commanding one of the three lords (like Byleth does in his game), so that way we could have Edelgard, Claude and Dimitri as playable characters.
2. Byleth as the Three Houses rep but in most of his attacks he "summons" one of the main lords. For long range attacks Claude will appear and attack with his bow, for mid range attacks we would have Dimitri and his lance and for close range attacks, Edelgard and his axe.
Between the two options I guess the most possible one is the second one, which would be cool. It would suppose a lot of work for Sakurai, maybe too much for one DLC, but that way you would satisfy all Three Houses and Fire Emblem fans, and at the same time I'd arge even haters of Fire Emblem wouldn't be able to complain that much beyond the silly
"not another anime character" argument.
Besides Three Houses characters, as a follower of Fire Emblem I've always thought the franchise is not very well represent in Smash and I'm not talking about the controversy.
I think a more proper selection of characters to represent Fire Emblem would be something like this:
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Marth. Mostly because he's the first protag of FE and the face of the franchise for most Smash players. Also represents classic Fire Emblem games. Fast and agile sword user.
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Lyn or
Hector. Lyn is one of the most popular characters among FE fans, at least top 3. Even if he uses a sword she would play like an assassin. I'd imagine her like his assist trophy: few attacks, but really powerful hits, maybe with a crit system? She also can use a bow.
If not Lyn, Hector is another really popular character and he uses an axe, he would be very strong and slow. Besides moveset, the both would represent Fire Emblem: The Blazing Sword (also known as Fire Emblem in the West), the first game to be localized outside of Japan, which is one of the most popular entries.
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Ike. He should stay in my opinion, maybe I'm a little biased but he's without discussion one of the most popular FE characters not only in Smash, also among Fire Emblem followers. He represents Fire Emblem: Path of Radiance which was the first 3D Fire Emblem game, and his sequel for the Wii, Fire Emblem: Radiant Dawn. About his moveset even if he's faster in his games, I think it's okay to have him as a heavy sword user, that way you can cover different playstyles.
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Robin. I will clarify: if we talk about characters I'm more of a Chrom and Lucina guy than Robin, but he, like the other two, is one of the main characters of Fire Emblem: Awakening, a game that as we all know saved and resurrected the franchise. So even if some people didn't enjoy Awakening it deserves a special treatment. His playstyle focuses in magic as we know.
-- What about
Lucina and
Chrom? Well I don't have any problem with the two being in the roster, honestly. They're from Awakening and they're very popular characters among fans. But I guess some people sees them (plus Roy) as a waste of slots. Personally, I wouldn't care if Lucina and Chrom were Marth skins. Another option is another slot but for the two characters, like Olimar. Chrom and Lucina would share the same slot and each one would have 4 different skins, like Olimar and Alph. Lucina would be the default character for having joined Smash in first place.
- At this point, I think a 5th character is well deserved. Before the release of Three Houses I would have suggested
Ephraim, from Fire Emblem: The Sacred Stones for the GBA. While Ephraim maybe isn't the most popular character of the franchise, he's a spear user and has a cool design. But with the release of Three Houses I would replace him with some of the options I mentioned at the beginning of my post,
Byleth with
Edelgard,
Claude and
Dimitri. The four characters would represent the basic weapons and also the weapon triangle of Fire Emblem: sword (Byleth), Edelgard (axe) and Dimitri (lance).
Maybe isn't a perfect list. I did it trying to represent different parts of Fire Emblem history with popular characters among the fanbase of Fire Emblem, plus having in mind different movesets and playstyles to avoid sword users (with whom I don't have a problem). Maybe a proper rep for the SNES games would be nice, but these games are the ones I didn't play yet, so I guess I'm sorry.