Repeat action while shortcut is pressed.
The current UI for setting the keyboard repeat rate is very difficult to use. Currently it has a slider for rate and a slider for delay, but it's incredibly hard to pick out the repeat rate you want.
Also, this is generally not a thing I even want to think about. Mac already has a System Preferences page to set keyboard repeat and delay. Would it be possible to allow BetterTouchTool to use that setting from System Preferences instead? It would make it easier for me to rebind keys on my keyboard this way.