I imagine being Sakurai and wanting to surprise even more and I would go with this:
FP9: Yoshimitsu, representing both Tekken and Soulcalibur. Incredible amount of content, he has 8 different costumes based on all his appearances throughout both franchises (main one is his classic attire with the oni mask, then OG Tekken, Tekken 3 light saber, Soul 2, his weird squid one, etc).
He also comes, for the first time so far, with TWO stages, both pretty basic being from fighting games, one from Tekken and one from Soulcalibur. It is implied their simplicity has been chosen with competitive play in mind. Music is abundant as well, like Terry.
He also gets two spirit boards, one for Tekken and one for Soulcalibur. All Mii costumes are referencing characters from both franchises.
Sword user again for sure, but moveset is very interesting: Katana copter, pogo stick, medidation actually making him recover some health, etc. It is mostly based on Soulcalibur, but the character has some references to Tekken as well with certain sound effects.
FFP10: CJ from Grand Theft Auto San Andreas. Probably the most outlandish wanted newcomer in my wishlist, he comes with a San Andreas stage of course. Mostly a comedic character, his animations more closely remember old GTA resulting in goofy violence, he has a few real guns but they are tweaked to look more ridiculous. The "here we go again" meme is referenced without the profanity of course as his entrance. Final smash is a tank, similar to the Landmaster but shorter, appears like a cheat code. He has actual ammo counters for all his weapons, the gimmick is that the more he uses projectiles and loses them, the weaker he becomes. Music is mostly licensed from Rockstar directly, and mii fighters are other major GTA protagonists (Tommy, Big Smoke, etc).
FP11: Crash Bandicoot just because now everyone thinks the last one will be mindblowing as well lol. Includes Spyro as a surprising assist trophy
Sakurai announces a final fighter pass consisting exclusively of reduced priced echo fighters, to be released faster and "fill some gaps", they are:
- Coco Bandicoot as Crash's echo releasing alongside him
- Dixie Kong as Diddy's, more of a Ryu/Ken deal
- Shadow as Sonic's
- The Boss as Snake, her rocket launcher is a sniper and has different animations, weaker but faster
- Medusa as Palutena's, she uses some of her cut moves from Smash 4