Another refinement of Street Fighter II that nobody asked for. You can have HD sprites and backgrounds or stick to classic (unlike HD Remix the classic sprites are against classic backgrounds, rather than that game's weird clash) and you can also tech throws, which is a huge change. Inputs for special moves are also far more lenient than the original Super Turbo, which helps if you're using the Switch's Joy-Con "dpad".

Online is pretty much full of Evil Ryu/Violent Ken as they're very, very strong but if you can pick it up cheap it's worth a go.