With all this talk about DoIP and where to go from there... Has no one read and/or run the beyond trilogy, Storm Lord's Wrath, Sleeping Dragon's Wake, and Divine Contention?
They flesh out the town of Leilon (on the coast south of Phandelver), and can easily be run after DoIP, LMoP, or even Dragonheist (as I did).
I liked these. Sure, nothing about them was new, but everything is solid. Can be run pretty much as written (not that I did). Maps are decent. NPCs are a bit refluffed MM creatures. But the plot is clear but open. i.e. not a railroad that allows te players to manage various ongoings while staying on plot, flexible enough but not a sandbox that leaves DMs wondering what's next.