Indeed, I wrote the blog articles about the new features of Beatmania IIDX such as the Lightning Model and the controversial video-capture saving feature in Beatmania IIDX Bistrover which is present in Lightning Model cabinets only. The upcoming sequel comes with another minor controversy, a paid lootbox feature for Random patterns. It's controversial but not as controversial as the paid lootbox for character card feature in Sega's Ongeki.
At least, in Sega's Ongeki, you're going to need character cards or something as part of the gameplay in which you'll move the characters left and right and dodging projectiles coming at them in addition to the notes. It's basically a rhythm game with additional gameplay features but it comes with its own controversy I already mentioned such as a paid lootbox feature for character cards. Why the need for physical character cards for a rhythm game in the arcades?
At the current time, the upcoming sequel to Beatmania IIDX 28 already had a location test last week and it's theme this time is video livestreaming. Overall, that's like two minor controversial features present in Beatmania IIDX 29 when it comes out in the arcades sometime this year. So about the paid lootbox for Random patterns, it is exclusive to Lightning Model cabinets just like the Pay-To-Screen-Capture feature from Beatmania IIDX 28.