Damned if you do, damned if you don't. Plenty have criticised MH for lack of communication, I personally thought it good he reached out and this largely hit the right note.
When I got this I thought this would be an incredible hard letter to write and largely a no-win (for some reason we all seem to think we are great at communication, even when I can guarantee the evidence is otherwise). Knowing how to sign off would be hard but the more common (Regards etc.) seem fairly remote and impersonal. So for me, congrats to him for keeping it personal. Love, yeah maybe not but then I prefer to most other endings I can think of.