Tbh, I really wish 3rd Parties were more Nintendo focused, but I mean within their own franchises. Cloud still rubs me the wrong way because if you were a FF fan following it through Nintendo console, Cloud is pretty much a middle finger for keeping your brand loyalty.
Let's be real here. While VII started planning with Nintendo, as a big N fan myself, the fact that they were so stubborn to stick to cartridges over CDs was what hurt them and why Square-Enix sought greener pastures. Nintendo didn't get their top selling mojo back until the Wii, which was, evidently enough, the first time they adopted a proper disc format that wasn't the GameCube's smaller (albeit still amazing) discs. Nowadays cartridges/memory cards are able to hold so much for cheaper that it's finally turned around.
Regardless of how you feel about Cloud, when you think Final Fantasy, whose usually the first person that people think of when that game title comes up? Sure lots of fans know Terra, the Warriors of Light, Tidus, Auron, Yuna, what have you...but Cloud Strife just makes the most logical sense. If you wanna get mad at Cloud for being a middle finger to brand loyalty, look at Snake. Or SONIC, the guy who used to be in direct competition with Nintendo until they went 3rd party.
It's less about brand loyalty. If that were the case, none of the 3rd party characters would be here. He was the most shocking entry to Smash (Cloud) but he's also up there with the other giants of the video game industry when it comes to characters.