As a new user to Regolith, I was disappointed at first because it seemed that Tabbed and Stacked layout were not supported. It took me quite some time to find out they were supported, but I had to define keybindings myself. Unfortunately, the Regolith and i3 websites didn't help me much with this.

How about adding the following default keybindings:

• Super+Shift+g : Tabbed (somewhat similar to Super+g : Horizontal)
• Super+Shift+v : Stacked (somewhat similar to Super+v : Vertical)

and change the behavior of the following default keybinding:

• Super+t : Toggle through all four layout modes instead of just three of them.

I wonder what the reason has been for the Regolith team to 'hide' these layout modes...