"Undo" 7-second pause when a comment is posted isn't the best user experience

Users are complaining that the 7-second undo 'pause' is disruptive, especially since the comment they just posted disappears during this time. 

Can we either a) add a global setting to allow us to toggle this setting off and on or b) change it so the text to appears during this 7-second window?  TY!