As regards autobuyers, I would suggest (and offer!) оne button for everyone and the ability to set the required proportion of upgrades instead of a separate shutdown mechanic. Let's say we set 2-1-1-1-1 and all upgrades are bought at the same level, except for experience, which is bought twice as much. It is also a simple and intuitive system.
Oh... Still Floor skipping mechanic.
* It must stop on the floor, measured from the floor of the last death. Not the maximum floor! Because after gaining prestige, our stats are sharply reduced.
* It should stop so that to the maximum floor we gain at least any significant amount of experience. Considering that each next floor gives us twice as much as the previous one, 2-3 floors will be enough. But it would be logical not to reach as many floors as we skip them at a time. Just intuitive.
* And even more so, it should not jump over the maximum level achieved, as it does now. But if the previous item is implemented, this item will be reached automatically.
New AutoBuyers logic is very strange... 19-13-12-11-11 of stats upgrade levels. I think, levels must be same. And we still want on/off for autobuyers! :)