This seems really great, but there is only a tiny thing I'm wondering about.

And that is, say I create/use several plugins on a site (that use this framework), how much extra code, resources, etc, am I using because of it. Say I have 5 plugins with Herbert, isn't that like having 5 mini-laravel projects + Wordpress + Theme Framework?
What I mean is that it could be nice if plugins could share the base of Herbert :)