I don't think Resident Evil being outprioritized by Dante would be that out of place. Street Fighter, Mega Man, and Monster Hunter are comparatively smaller series to that franchise if you go by straight sales (and also arguably media prominence), yet two of those got characters and the latter is getting an AT, a boss, and potentially a stage while Resident Evil has gotten nothing. So if those three franchises can get more attention in Smash despite being less well known, then Devil May Cry doing the same is not out of the realm of possibility.
Been playing Monster Hunter recently, I wonder if, because of Rathalos being in Smash, we will get Monster Hunter music too, specifically the main theme of the game.
I hope so, the franchise has a huge selection of memorable songs to tap into such as the Elder Dragon themes, Lagiacrus', the Magalas, and the like, so I'd love to hear at least a few of those tracks make it into Smash.