Re-enabled mod+d (since is very well established).

i3/config

@@ -74,6 +74,7 @@ bindsym $mod+Shift+q kill
 
 # start program launcher
 #bindsym $mod+d exec --no-startup-id dmenu_recency
+bindsym $mod_next+d exec --no-startup-id "rofi -show-icons -modi windowcd,window,drun -show drun"
 bindsym $mod_next+Return exec --no-startup-id "rofi -show-icons -modi windowcd,window,drun -show drun"
 bindsym $mod_next+Tab exec --no-startup-id "rofi -show-icons -modi windowcd,window,drun -show window"
 

i3/config.simple

@@ -54,6 +54,7 @@ bindsym $mod+Shift+q kill
 
 # start dmenu (a program launcher)
 bindsym $mod_next+d exec dmenu_run
+bindsym $mod_next+Return exec dmenu_run
 # There also is the (new) i3-dmenu-desktop which only displays applications
 # shipping a .desktop file. It is a wrapper around dmenu, so you need that
 # installed.