Honestly the more I've resonated on it, and after some good points posed earlier in the thread, I feel like Killer Instinct is a good choice for a secondary Rare "rep" - even though that circumstance is pretty unlikely. I had forgotten just how prominently it used to get showcased alongside those big, longstanding Nintendo IPs. I suppose at one point this was Nintendo's signature fighting game series, predating Smash and it still stands as one of the only traditional fighting game IPs they've had to their name. I guess it probably counts for something that it was treated as sort of the lead-in / main attraction for the recent NSO reveal too. I certainly think Fulgore holds a bit more weight than the likes of Conker, not sure how he stacks up with Battletoads.
Maybe we could see Fulgore show up as an Assist Trophy next game? I imagine that for fans of the series it'd be exciting to see him here at all. Perhaps they could even build a Mii Costume off the existing model after a little while, as they've done with a few other characters.
This is a really fun animation, but yeah I feel like if Chief made it in he probably wouldn't go on such a massacre. Then again, that wouldn't be so different than Mega Man immediately throwing hands. I just imagine Master Chief's reveal being one that poses is a bit more like a friendly sparring with a respected opponent like Samus. But maybe it'd go something like this if they want to make a big show of the crossover appeal.
I'm very happy seeing Marina's name pop up this much, she's one of my big pipe dream picks too. My words aren't really properly coming together on it right now, but she just fits the essence of Smash incredibly well. I adore Treasure games and their designs are so much fun to boot, you look at Marina and you can already garner how unique she'd be. There must be some sort of unspoken understanding about how nicely she slots in with some of the other big boys at Nintendo, validated even further by her inspired moveset in Smash Remix.
I really like the idea of a more "condensed" grappler character, on the short side but has a ton of raw power and muscle behind them. Had Wario been added earlier I feel like he'd have leaned into that a lot, but as is we don't have so much of it. I can't even tell you who the hell owns this character anymore though, so unless we ever see some sort of revival or rerelease this is the most lost of lost causes.