Would be nice if there was a dynamic difficulty that constantly changes based on how well your performing. You can always have a hard fought and be victorious but just barely to have a great experience. Would need a different implementation to have some penalty or reduce reward for not performing well so you will be motivated to try your best. Although properly implementing that is definetely a difficult task but seems possible enough to hope for. The closest thing I can imagine is hades that gradually increases damage resistance each time you die and I really like that implementation for a rougelike. I am someone who likes a bit of challenge but will definitely lose interest if I have to repeat something multiple times. Hades is an exception as each runs varies a lot but soulslike game that you have to try multiple times to learn and defeat a boss is a massive turn off for me.