I created a tool that shows timers for next map objective. It automatically detects when the last objective was done, and then shows an overlay on your screen with a timer to when the next objective starts.
Me and a friend has been using it for a few weeks now, and it works flawlessly. However, I am still not done implementing all maps, but so far 8 of them are implemented and working.
I am still debating whether I should sell this or not, since I am fairly sure that blizzard can plug the hole fairly easy once I put it out there..