Clearly it shows Rimuru fighting Hinata in the opening which is still a bit of a ways away, what with fighting the Orc army still, Milim still needing to be introduced, establishing Youmu as a hero, fighting Charybdis, going to meet+save the kids, introducing Ramiris and then FINALLY fighting Hinata lol. But does it end with him finding Shion (plus 100 other villagers) dead? Or do we get to see Rimuru massacre 10,000 soldiers, summon Diablo (who I REALLY want to see), ascend to a demon lord and have Wisdom King Raphael be created, all his named monsters evolving further and capping it off with Veldora being released? As much as I want to see all that, I think the latter might be a bit much given this series is going what? 24 episodes?
If it gets a 2nd season with another 2 cours, would love to see the Labyrinth be created, the Colosseum tournament and hrm... I guess the Eastern Empire invasion with Rimuru fighting a captured Veldora and absorbing him directly and evolving again from a Demon Lord to True Dragon or whatever. But again, that seems like a LOT of content >_>