Not to rehash an old post but I’ve been convinced since iPadOS 17 that the blooming effects have been significantly improved, maybe via a driver update?
So, I haven’t been checking with each release, but one thing I only just now noticed is that the Book app seems to default to a “not totally black” background (I don’t read a lot of text only books, so don’t think I would have changed it from the default). It appears part of it may be that they may be making different aesthetic choices.
One thing I did remember changing for the better a few releases ago is that the cursor would leave a wide path behind it and only redraw it after stopping the movement. Now, I “think” the path is narrower and it follows the cursor more tightly, not leaving a trail of “on” led groups behind it. If I’m right, it’s gotten “better” in the ways I expected it would, i.e. they’ve progressively figured out smarter more efficient algorithms to control the miniled’s.
Using Stage Manager, I was able to get a miniled-off rectangle and move it in front of a partially lit background and you can see the rows of miniled groups snapping on and off quickly, but, again, that’s not a way I’d ever use my iPad.