If by chance Sakurai wants to represent Japanese visual novel games that are world-wide popular in Japan, I see Saber making it. I am keeping an eye on this choice, since Sakurai even considers visual novels to be important pieces of gaming:
https://sourcegaming.info/2016/01/21/sakuraixnomuraparttwo/
"Sakurai: Yes (laughs). If you pull up a list of game designers born in 1970, there’s quite a few big names: Hideki Kamiya (
Bayonetta)
,Fumito Ueda (
ICO), Yoko Taro (
NieR series), Jin Fujisawa and Yosuke Saito (
Dragon Quest X),
Chiyomaru Shikura (Steins;Gate), and the late Kenji Eno (
D and others)."
Saber's potential competition could be a Steins;Gate character, but IDK if Hyouma could be made as a fighter. I only seen the first season, and not beyond Zero to find his potential.