i think we're pretty spot on on why Soul Calibur 5 and maybe Soul Calibur in general has fallen short.
theres this huge potential for character design but like i said they seem to be tethered by this strict storyline and rely on cheesy undesirable personalities.
Ryuhza mentioned Xiba as "the eater" and Natsu as "the cocky ninja". honestly these personalities could work if they were reflected into their fighting styles. what if Xiba was a little overweight and had a few body thrusting attacks (kinda like Bob in Tekken or Rufus in SSF4). and what if Natsu had taunts all throughout her attacks.
suddenly theyre not cheesy anymore and actually pretty interesting.
maybe Viola instead of being combo heavy, could have more counter hit attacks or guard impacts to reflect the fact that shes a fortune teller. maybe ZWEI could scrap EIN and himself be partially a werewolf equipped with beastly, claw attacks.
characters like Asta, Voldo, Raph, Lizardman and Tira are successful because they connect their personality to their fighting styles.