I think we all first need more clarity before measures and constructions can be discussed. In general, I am not in favor of imagining L-blocks as a miracle weapon. Beyond a certain level of complexity, physics also needs to be reflected in the design of the solution. A poorly constructed steep wall, which "falls like a tree" thanks to martial reinforcement (but unfortunately is not more stable!), is of no use to anyone. By the way, I consider such blocks that also have their base on the wrong side even less than overestimated L-blocks. That’s nonsense – is a cousin of @goalkeepers’ favorite neighbor involved here somewhere?