@farmerabe I actually understood immediately what you were trying to do with that scene and approved instantly. While Grimm may Cry is a fusion if RWBY and Devil May Cry, it is more aligned as an original take on RWBY. So while Jaune is representing Dante, he is not Dante.
He can't reasonably start mastering every weapon he picks up. Doing so would make it less unique, and in all honesty, make the Grimm Arms as irrelevant as the Devil Arms. One thing that constantly annoyed me about the Devil Arms, is that they only ever found use once.
It isn't like they disappear, Vergil being able to Use Beowolf in DMC 5 proves that they still exist. It was even established that Dante hoards the Devil Arms. One think I hope you do is have Jaune pick his favorite set, master them, and distribute the rest.
Ruby giving Crescent Rose to her daughter would make sense if Jaune gives her the Grimm Arms version of Pandoras Box. Sorry but if Ruby was ever to get a Devil Arms, it should be Pandoras box.
At least that's my suggestion. I know Pandoras box appears in DMC 4, but you could just scrap that stupid Frog Fight in Dmc 4, and make it appear during the events of RE4. Doesn't even have to be the Frog, you coild make an Elder Grimm appear in RE4, say the misery of the village attracted it. Have Jaune battle it more than once in different points of the campaign. The final confrontation with Ruby's help. They kill the thing and it spawns Pandoras Box. Ruby instantly falls in love with the weapon. Then eventually years later when Summer starts training, she gives her Crescent Rose.
... OK im doing it again, sorry ignore all that.
Anyway, yea keep doing what you're doing.