Final Fantasy in Super Smash Bros.
I. Testing the Waters
According to the good scholars at Source Gaming, Super Smash Bros. Ultimate's development started as far back as late 2015, with the design documents being completed for the base game around December 15th, 2015. The request for a new Smash game had even come much earlier from the late Mr. Iwata himself (this was known as early as early 2015). Source:
https://sourcegaming.info/2020/05/16/ultimate-timeline/
It was during the November 12, 2015 Nintendo Direct that Super Smash Bros. for Wii U/3DS would reveal their latest guest DLC fighter; one which would shake the outlook of DLC speculation, and blow the minds of fans all over. Cloud Strife from Final Fantasy VII was revealed as a DLC fighter, who would come along with his own stage, and two music tracks. A Smash-focused Direct followed later on December 15th, 2015 which revealed two more DLC fighters; those being Corrin from Fire Emblem, and Bayonetta from her self-titled series. However, said presentation also went into detail over Cloud's content, as well as accompanying Mii Costume; Geno.
Fast forward to December 7th, 2018 and Super Smash Bros. Ultimate released. In it, Cloud returned within the base roster however, the content he brought hadn't changed; same Midgar stage, same two tracks (which has been the greatest concern) yet, the Mii Costumes it brought in Smash 4 were nowhere to be seen. Further along the way came the first Fighters Pass Challenger Pack #2 with Hero, and neither of the two Square Enix Mii Costumes made a return. Now, only hours away from Sephiroth, Challenger Pack #8's presentation, many are expecting to see the return of the Chocobo Hat, and Geno's Mii Costume (dreadfully), as well as more music that could finally add more diversity to the Final Fantasy content in the game. However, the timing of tomorrow's presentation comes off almost as an anniversary to Cloud's reveal in Smash. Knowing that Ultimate's planning began sometime in 2015, perhaps the negotiations between Nintendo and Square Enix weren't only for Smash 4 at the time.
By 2015, certainly Square Enix must have been aware of Sakurai's requests and wants since the Brawl days (as stated and discussed on this thread before numerous times, Geno had been requested for Brawl by Sakurai). However, it would seem that the dream for the star messenger was dashed when he was shown as a Mii Costume back on December 15th, 2015. At the time it seemed as if that was all the negotiations were able to muster for the character however, when considering the additional Final Fantasy content coming soon to Ultimate, perhaps Geno's Mii Costume was not a mere "consolation prize". It is possible that within the negotiations for Smash 4, and most likely Ultimate's content, Square Enix agreed to licensing their IPs starting with Cloud Strife for Smash 4 as a means to "test the waters" with his inclusion. As for a continued collaboration going into Ultimate, Cloud's return and any additional content from Square Enix would be driven by how the former's reception would be in Smash 4. It didn't take long for the overjoyed reactions to be seen once Cloud was revealed back in November 2015. The fact that alongside Cloud, a Geno Mii Costume was also released does seem to indicate that it was meant to also gauge interest in the character specifically.
II. Final Fantasy in Smash, Five Years Later: A Repeat of 2015?
Five years later Smash will hopefully and finally be receiving more Final Fantasy content, and with it (hopefully) more music. In addition to more music, and a second Final Fantasy stage, we'll most likely be getting more Final Fantasy Mii Costumes and Spirits (again, hopefully a good number of spirits). Thinking between the December 2015 Smash Direct, and this Thursday's upcoming Sephiroth Showcase, a sense of "déjà vu" can be felt. Like with the December 2015 Smash Direct, Sakurai will certainly go into detail over Sephiroth's moveset (just like he did with Cloud). Afterwards he will talk about the new stage (as he did with explaining Midgar). Two segments that may differ from 2015's showcase will certainly be the music, and Mii Costume Wave segments. Both (again, hopefully) will show much more content than back then. Hold on... the Smash December 15, 2015 Direct was pretty much a Cloud character/DLC pack showcase similar to the ones we've had within Ultimate's DLC. In said Direct we got two additional DLC character reveals. Yes, in tomorrow's showcase, Nintendo has made sure to specify that nothing else (no additional Challenger Pack) will be revealed but, considering the fact that it's another Final Fantasy character, and there is a particular attention towards a missing "costume" whose character has been requested for years, it does bring up the question if Sakurai would add a surprise within said presentation? As many have noted, the showcase will be "streamed" at a much later time than past character showcases. However, surely Sakurai wouldn't just add another character slot in the middle of Fighters Pass Vol. 2 by the end of tomorrow's presentation. That would be absurd! Or would it?