Git submodules are cool but can be confusing because people are already used to their language package manager. They also add overhead as changes frequently hav

Git submodules are cool but can be confusing because people are already used to their language package manager. They also add overhead as changes frequently have to be pulled/pushed downstream/upstream. But in cases where it makes sense to use it, it's a great tool. Eg: theme that is reused in 3 sites is in it's own repo and is a submodule in each site.