alt Hacker NewsWorktrees are a must if you work with monorepos or just multiple branches in general. Lack of conventions (or rather the braindead defaults) and having to explicitly type out everything is what hinders adoption the most.
I've solved this by running thin bash script wrappers that keep the workflow SVN-like with a root directory that contains per-branch directories and a hidden bare repo).
I think my layout is similar to yours. What do your scripts do?
My branches end up in a tree structure (no shit!), and I rebase and merge up stream as changes land. I guess it could be more automated, but the only tedious part is remembering to remove old worktrees and prune the old branches