A really small thing. For years, on minecraft, we have enjoyed a runny, jumpy, arm-and-leg flailing player character to the point where we probably don't notice how out of place it is with the seraphs.
It looks really stupid in this game and it's BECAUSE vintage story was made to look smooth, that, combined with the way floatier jumping and bunny-hopping-like physics of running and jumping in the game.
I think a jumping animation really would fit nicely with all of the other smooth actions the player character makes and add almost a beauty to players hopping and frolicking along through fields of berries.