DLC is really hit and miss with this franchise.
On one hand it's nice that I don't have to rebuy the same game and can just continue using the same save I had. It's also nice to see progression and development with the characters I came to know throughout the game. What I wouldn't pay to get more "chapters" of SV where we can hang out with Arven, Penny, Nemona, etc. Let me see Arven work on the damn badge quest.
On the other hand DLC in this way kind of limits the amount of changes that can be made to the game. Yeah shit can be rebalanced, but often new content is restricted to new areas and new characters, and progression from the old. In third versions the whole game can be reworked and rebalanced. Emerald turned a fuckton of trainer battles into double battles, moved all the Contests to Lilycove, and replaced the Contest Halls with Battle Tents previewing the Battle Frontier facilities. USUM completely rewrote the story, and now Lusamine isn't the main antagonist, but Necrozma is. You can't get that kind of shit from just a DLC.