Add keybindings to directly tile windows to a layout spot and option to skip a layout spot on layout activation

Hi, I've just started using Tiling-Assistant and so far I like it better. There are two features that would be really helpful.

1. Better keybindings. Right now you have basically some arbitrary keybindings that have nothing to do with your selected layout. What I need is to be able to move a window from one slot in the layout to another, or from outside of the layout e.g. ctrl N on your browser, to a slot in the layout.
2. The ability to have empty layout spots. So if I have a layout with 9 slots, there are selected apps for the last 6, and I trigger that layout, then I have to put a currently open window in each of the 3 first slots. What I would like is to have my grid such that I can snap windows to that grid ( via keybindings mentioned above ). I don't necessarily always need all 9, but if I want to move one window to a new spot it's there.
   Now, I can help build these features. If you are interested in adding them, could you give me a pointer to where, in the code I should start to look, and any thought our concerns you may have?
   Thank you
   Raif
   One Idea for the keybindings would be, in the layout setup, each rect has the option for a keybinding. Of course there would be a finite number key combos, and we would have to check a "master" list, but I suspect you have that already for all the other keybindings.

Start by tracing the existing layout setup and keybinding handling in the GNOME extension. Determine how layout spots and selected applications are represented, then define how direct slot targeting and skipped spots should behave; done means both requested features work without disrupting existing layouts or keybindings.