I figured I'd post my own two cents.
People often say history repeats itself, and I can't help but feel that applies all too well here. For the people who weren't posting on this site during the Smash 4 DLC era, let me tell you a story. Basically, in early April of 2015, when Lucas was announced, the Fighter Ballot was opened, and Mewtwo was released, the famous "Royu" datamine took place. Data was found in the Mewtwo update that spoiled two then-unannounced DLC characters, the veteran Roy, and the newcomer, Ryu from Street Fighter.
Now keep in mind, this was a whole two months before these characters would release. And right off the bat, let me tell you...Ryu got QUITE a bit of hate.
I was shocked. At the time, two characters from the same third party company was unheard of. Many thought it would never happen. But man, was I excited. Ryu is such an iconic character, I thought, and Street Fighter is the definitive fighting game franchise. So to go and see people immediately getting pissed at Ryu was pretty disheartening. Many would say he "wasn't 'Nintendo' enough" and that "fighting game characters shouldn't be in Smash" and so on and so forth. But what always stuck out the most to me was this, which cropped up all too often.
"Ryu would be too similar to Mario. He's a wasted slot."
Yes, you read that correctly. People would point to the Hadouken and say it was no different from Mario's Fire Ball. They'd point at the ever-iconic Shoryuken and say it was just another Super Jump Punch. They'd look at Tatsumaki Senpukyaku and claim it was exactly like Mario Tornado, which Mario didn't even have anymore. They'd say that, like Mario, Ryu would just have a bunch of punches and kicks.
It really opened my eyes to how myopic and antagonistic the community could be toward choices that they, themselves, didn't consider to be "worthy" of a spot on the roster. Here was Ryu, a legendary character who, to this day, I would only say is less iconic than Pac-Man and Sonic when it comes to Smash's third party roster, being lambasted for being too derivative of Mario. And the kicker, most of these people never so much as touched a game with Ryu in it, never mind a Street Fighter game.
And then, once Ryu was revealed, people came around on him. He was very distinct from every other character on the roster, he brought a gorgeous new stage with Suzaku Castle, and he brought two awesome remixes. And he was fun as hell, being a true combo-oriented character with actual Street Fighter command inputs, even having his Street Fighter IV Focus Attack to round out his specials, and even two Final Smashes. In my eyes, he was the single greatest DLC newcomer Smash ever had, Ultimate included. But not two months earlier, some people were so vehemently against his inclusion and all it stood for.
And it all just reminds me so much of what's happening now with Terry Bogard. Now, all cards on the table, I've never played a fighting game from SNK. While the company was always in the back of my mind, it just sort of flew under my personal radar. It happens. But I recognize what Terry means to so many, and honestly the Power Wave alone justifies him as a fun choice in my mind. Maybe I'm easy to please, but come on. That's a cool move. And the geyser version? Even cooler.
Of course, that's not to say you have to be excited for Terry. There are definitely some choices that, while I wouldn't hate them, they'd do nothing for me excitement-wise. However, I recognize their significance and I'd be happy for those who do want them. For example, Doom Slayer and Bandana Waddle Dee. Personally, they do nothing for me. I think they're kind of boring, and they're just not my type of characters. However, I absolutely recognize the merits of both of them and, funny enough, they're both characters that my younger brother would love to see (funny how that works, lol), so I'd be a-okay with their inclusion. And who knows, maybe they'd even be really fun to play.
I just think we should wait until at least Terry's trailer to pass judgment, just to avoid being hasty. I'm definitely not trying to police opinions, mind you, but I'm just giving my view of things.
