>>58638288SV best points are the absolute freedom, the dex which benefits from said freedom (you can get nearly every single pokemon from the start if you know where to look for), the world building (which you get from normal npcs but also from the academy's classes that teach you lore and characters' personalities), the characters themselves and how they interact with eachother, not only with you (again something you can see at the academy, each teacher as its own series of events for you to befriend them, like some Persona-like character link) and the story itself, with further elevates the characters and lets them breathe on their own version they don't step on others' plot (ie the tale of friendship and social injustice of Team Star is done separately from Arven's arc of saving his first and sole friend who has been with him since his days as a neglected child, which is separated from the victory road storyline which is the classic become champion goal except this time it's just a way to an end, the real goal of becoming a champion is to become true rivals with the true champion of the game who is lonely at the top).
And yes, the ending is the best part, uses the
four main characters you bond with during the game, makes them go from being your groupies to actual legit friends to eachother, fully opens the map with the forbbiden area you were previously unable to access and has neat lore and twists nobody expected from Pokemon. The DLC is an extra, it's basically a small sequel story with new characters and plot which origin traces back to Paldea, increases the difficulty a lot, adds way more open world to explore, more "wtf pokemon" bits you wouldn't have expected from the franchise and ends after connecting to the main story of Paldea right at the end, you can see it as the B2W2 of SV. That said if you get the DLC absolutely get the mystery gift that triggers a special one hour long event epilogue once you have cleared the DLC main plot.