Ugh, they're still doing the thing where the current Rider uses past Riders' powers/weapons? Every toku franchise seems to be doing that these days, at least the three I follow (KR, Sentai, Ultraman). It's gotten very tiresome. Especially since it often doesn't make any sense in the context of the storylines. Revice was claimed to be in a universe where all the previous Kamen Riders existed, with George Karizaki being a fan who incorporated their motifs into the power stamps he created, but the backstory of the Revice world, with the demons and Giff and everything, is incompatible with previous Kamen Riders existing, other than those introduced in the show like Vail. And Donbrothers hasn't given any hint of an explanation for why the monsters-of-the-week have attributes based on past Sentai teams; it's totally gratuitous. As for recent Ultraman series, they sometimes have handwaves for why the New Generation Ultras base their powers on past Ultras (e.g. Orb lost his original powers and had to borrow others' powers), but usually it's just gratuitous (e.g. Rosso & Blu had elemental powers that were awkwardly linked to previous Ultras, e.g. Ginga being water for no good reason even though Agul, an actual ocean spirit, would've made far more sense).