I don't think I was that hyped for a moment in Kamen Rider since I first saw Touma transform into Xross Saber for the first time, much less a whole episode, and I liked how impactful the blows felt on both Valen and the Granute's end.
Yo, now that you say that, I feel like it might be just a way for Hanto to silently cope with his boss's death, and if his boss's "corpse" gets completely destroyed, it might trigger either a berserker type form, or his final form.
^^Technically, I haven't finished any, but I've gotten somewhat close to finishing Zero-One and Ex-Aid (I say "somewhat" because I stopped watching both shows at episode 35, which is a wild coincidence). But I have finished Kamen Rider Fourze and Revice up to the episodes before the final episode, so I presume that I'm not missing out.