You should learn how to do this yourself, and stop waiting for other to do it for you. Download the Insurgent Toolkit and read the arcticle you found in his mod page. If you have any question about how to use it, post your doubt in the comment section and the author will help you out.
Nope, this is not possible because of the limitations of the Save Game, to add more than 12 gambits you need to edit the source code and then compile the game with this new changes.
Sorry for throwing cold water on your dream, but this can't be done in this game, so far none has tried to reverse engineer the 3D Model & animations for this game.
Easy, Draklor Lab was created first than Vortex Extension, most of the authors seems to not care about that to update the mod to be compatible with Vortex, I hope this make you stop going in every mod page asking the same thing over and over.