I think this system is what we have been needing for a simple mechanic for grappling, that makes grappling an option players would choose. Various options and outcomes that are realistic in grappling are discussed and addressed. While not perfect, I can’t think of how else to handle it without building yet another new subsystem just for grappling. This is simple enough that it can easily be implemented at your next session. I know that I will use it, if I need to resolve a grappling issue.