That was quite a reveal, to say the least. Alrighty, let's break it down... My initial reaction? Hype. I didn't expect a 1st party combo breaker. The trailer was a little self-aware about the sword fighter thing, which was kinda funny. 3 Houses is a juggernaut and one heck of a recent Switch game, so kudos. Now for the moveset... Great googly moogly! I didn't expect all of those weapons. The whip sword was enough, but this is so much better. The way the weapons work and all of their neat little gimmicks is so cool! Mechanically, Byleth is hands down the most interesting Fire Emblem character. I own the game but I haven't really played it much. The soundtrack is solid, but my biggest gripe is no God Shattering Star (my favorite song in the game). So, please allow me to mourn by praying the kazoo version of the song.
Anyways... I'm glad to know that Mii costumes are still getting songs! I'm for sure getting Cuphead. It's kinda funny that the Gunners are getting all of the extra music tracks, but Adol doesn't get in as fighter, here's hoping that he gets a Mii costume, and gets bundled with music so that the Mii swordfighters come with a little something extra, too.
6 more fighters announced. We're mostly in the dark. I still think 4 more will be released after the 6, bringing the total to 10.
I called out how future DLC would be handled a long time ago.
If they keep up the secrecy, it'll be harder to leak. I'm down. I like surprises. Here's hoping they keep it up.