The new history panel in Photoshop allows for multiple undos and redos, which is nice but will take some time to get used to. It would be nice to toggle that on and off so I can compare two states over and over as in previous versions. My other problem is that it records a lot more actions now. Mainly it is recording every time I make a layer visible or hidden. I like to compare layers a lot and this behavior is eating into valuable real estate on the history timeline. I would love to have an option to delegate what is recorded as history, or at least an option to toggle back to the old method of how history states are recorded.