I have fond memories playing Street Fighter II in the arcade and the Champion Edition on the Sega Genesis. I stopped paying attention to the Street Fighter II series after it was released again and again in the arcade and on home consoles. I felt like, as soon as I would finally get used to the new version, Capcom would come out with an even newer edition the next year.
There was the original in 1991, Champion Edition in 1992, Turbo: Hyper Fighting in 1993, the Super version in 1994, Super Street Fighter II Turbo in 1995 (and 2000), Hyper Street Fighter II in 2003, and I'm sure there's a couple others that I'm forgetting. I couldn't keep up especially once the games switched over to the Saturn/Dreamcast, PlayStation/PS2, and Xbox.
So this is a nice release for someone who stopped playing the games a while back and wants to catch up. 17 core characters (and 2 bonus characters) are in the roster, the music has been updated and remixed, and you hear the characters' Japanese voices from Street Fighter IV. The updated graphics are also nice. The game is playable in HD or in a classic, more pixelated mode that's has a 4:3 aspect ratio. I prefer the HD widescreen mode but switching to the pixelated mode is kinda fun as it's a reminder of how far games have come.
The controls are smooth and fluid and the fighting is as fun and fast as ever. I like the Street Fighter IV series but I am more a fan of the classic, 2D style. The game runs at a smooth framerate and I didn't have any dropped frames in both portable and home console modes. Some people might have issues with the Joy-Con's D-pad and analog stick but I haven't had issues. Those with problems can always buy a Pro controller.
There is a 2-on-1 cooperative mode added from the Alpha series and it's nice a addition. There is a new mode called "Way of the Hado" but the controls are awful and it's not very fun. My only complaint, really, is that Capcom is charging $40 for a game that is essentially a port of Super Street Fighter II Turbo HD Remix released 9 years ago. The Switch version looks and performs better and it has two more characters. But still, the underlying game was released on the Xbox 360 and PS3 9 years ago.
Classic Street Fighter fans will appreciate this game. It represents the best of the older and newer series. The Switch handles the game well and it's nice being able to take the game anywhere to play. Some people might have issues with the controls but I thought they were fine. Had this been a $20 release, I would have given it a full five star rating. But it deserves to be knocked down because of the high price and how old the source port is.