Yeah, this is especially useful for classes that prepare their spells from a longer list, like wizards or clerics. I like to use revision card size notes for each spell, so then when we long rest, I can just rifle through them and physically take the ones I'm choosing to prepare. It is more faff to make the notes than for sorcerers or warlocks, who only have to prepare a few notes each time they level up, but it massively streamlines sessions