I’ll also boost this feedback myself, I left this same feedback in Slack at the end of February:
"Any possibility of creating a “roll up” view of the dashboard menu where we can group apps under a category/header?
Our use case - we provide account and tax services. Some embedded elements relate to one category or the other and for some of our clients the left menu can get pretty long at a glance and start to look a bit disorganized. Would love to be able to create my own category headers and then be able to nest the family of apps related to that category (e.g. “Bookkeeping”) under separate topical carrot menu drop downs so they’re better “organized” from the client facing perspective"
I see this feature becoming a pretty significant necessity in the near future for us!