I just added the confirmation skipping on my end. Once you've actually seen and confirmed a warning at least once, later versions of it will have a Don't show this again option, and you can turn those warnings back on from Settings if you ever want them again. I'm doing the same sort of thing for repeated Imperial City encounters like Ilya Fen so you don't have to keep clicking through scenes you've already seen every life.
For the speed setting, there is already a Keep selected speed after reincarnation option in Settings. If you have that enabled and using the wilderness reincarnation button is still dropping you back to x1, let me know because that would be a bug rather than intended behavior.
The discovery % chance also hasn't been removed. It shows until that life's wilderness discovery roll happens, then the display changes to tell you whether you found something or not. At the higher speed settings that roll can happen almost immediately, so it can look like the percentage vanished when it actually resolved before you really had a chance to see it.