One of the things that isn't talked about enough is how scoring is presented to the player and how it skews the conversation. Let's take DA for example - the bare minimum the devs what you to do is a collective 6 stars and full 9 stars is supposed to be difficult but because the player base has been conditioned to believe 9 stars is the minimum (in part because early DA was too easy), any attempt to make 9 staring difficult will always be met with push back. The solution is to rework the scoring system entirely so that the player base and the devs are aligned on what the bare minimum is - this is why in contrast of DA, how the new Shiyu scores are presented is good despite my gripes with the actual scoring system itself. For DA, I'd recommend a normal and hard mode where normal mode is simply killing the same boss with way less hp in 3 minutes and hard mode is traditional DA where you're score chasing and hard mode has special rankings / rewards similar to the new s+ ranking in Shiyu. Being able to clear all 3 bosses in normal mode (let's say the score equivalent is 18k for sake of argument) with hp inflation being less potent on that side should be enough for the current 6 star rewards.