Yes PLEASE!!!!!

I've kind of made my own Ironman mode using AutoHotKey.  The first thing I did was turn off the autosave.  Then I set up an AutoHotKey script to disable the quick-save keys, and to automatically quick-save every 60 seconds. 

It's not a perfect solution, and you still have to resist manually saving, but it's better than nothing!     

I really really hope the devs add a true Ironman mode!

I think this is a good idea as well. Sometimes the temptation to reload can be hard to resist. 

ironman modes typically remove the "save" from the menu and replace it with a "save & exit". they usually also overwrite the single save automatically (for example after every action you take), so if the game crashes, you can restart close to the point where it crashed.