Greetings All.
As promised on p.2 of Lasalle, this website will offer an ongoing collection of new optional rules as they evolve. You can consider these in the "OPT" category of Advanced Rules, as per p.71. That is: both you and your opponent have to agree, and they aren't mandated by any army list.
Some of you have already seen the first of these, the simplified Obstacle rule. There's another one, and I've decided simply to consolidate it into one "living file" that will evolve on the Downloads page.
best,
Sam