Monster Hunter Generations Ultimate (released 2018 outside of JP) had a ton of dlc quest unlocks and they were all totally free. It’s proving difficult to find a proper separated list of exactly how many, but here’s a google doc that lists ~200 quest related equipment unlocks, the vast majority of which are dlc: https://docs.google.com/spreadsheets/d/1hlBLacFYxdh83a-GkxYnsIF6nH7huP_H2aI4APRGicg/edit?gid=408012748#gid=408012748
Something noteworthy is that’s just quests for equipment. In contrast, there’s only 37 event quests (all event quests are free) in Rise that offer any unique item reward, and 23 of those quests give equipment.
Giving a very conservative estimate with that all in mind, I think it’s safe to say that GU had a good five times more free dlc rewards than Rise does.
Monster Hunter is a great series. Not terribly stoked about the endgame in Rise though. I think my ideal game would be something like Generations Ultimate but with the overall clunk removal that world/rise did.