When to consider moving all burned to master - Progress Slowed - Thoughts?

My recommendation would be to only move an item out of burn status if you come across it in immersion and completely can’t remember it. Even if it takes you a bit to remember it should come back quickly once you start using it.

If you really want a way to review burned Items there are a couple of options though. You could use Item Inspector to create a list of burned items to quiz yourself as often as you want.

Another option could be to learn to write the Kanji if you haven’t done that yet. I would recommend Ringotan for this as you can set it to wanikani order. Then you learn to write while also reviewing burned kanji. It really helps to differentiate similar kanji when you learn to write them. That’s really the main benefit of learning to write since most people likely won’t be writing in Japanese often.