I just took a long overdue OS upgrade on my laptop that I had been putting off until now because 10.6 allows me to use spaces and expose, something that mission control has always paled in comparison to. I know I'm not alone in wanting that functionality back, but at this point I've given up on Apple making it available. Luckily, total spaces works fairly well. I upgraded to 10.9 so as not to upset my mid 2009 13'' MBP, but I'm not able to find a way to have hot corners display all windows. It will only display all windows of whichever application is currently active. I'm going to hazard a guess that this is once again just something that apple doesnt offer anymore, but I thought I'd ask if there's any chance that El Capitan allows this, even if Mavericks doesnt, as I would gladly upgrade if that were the case.