Basically, there was Karabiner that did the job, but with Sierra it doesn't work anymore and there's still no updates. What are other ways to change shortcut output? In Particular I need to change ">" + Option that gives "≥" to give "."
You can make a custom keyboard layout to do this with Ukelele
There are several alternatives for software that can do this. My preference has been BetterTouchTool.