Ideas and advice about Oh Bloodstained star (Patreon)

I find myself full of ideas regarding Oh Bloodstained Star but even then, I am of the opinion that too many ideas are never a bad thing. I wanted to introduce more things foreign to the harry potter universe like for example, Rias could turn Fate Stay Night into a literal immersive game where the more they would progress, the stronger they would be or maybe just them watching a Fate TV show and trying to copy what they see like maybe a pure-blood trying to create IRL the concept of magic crests. I wanted to know what you all thought of that and if you, the readers didn't have ideas maybe like that you would like to see appear in the story.