Agree with all your points. Magically too (!) she writes as interestingly for adults as for children; there's enough er silliness for the rilly young, then utterly authentic school one-upmanship sub-plots to seamlessly cover the older kids too. Suspense as Hitchcock would applaud.
But what I was most pleased to note is.. she is using her now worldwide bully pulpit to Educate! More than clever, the words she puts (in esp. Dumbledore's) mouth at crucial moments are as good as a parable or a Sufi saying - yet coming not even close-to sounding preachy. She is distilling some Gems of Wisdom for the little tykes / and any older tykes who have forgotten.
And {Cackle} kids *will* recognize the title-besotted, egotistical fools like Fudge - whose insouciance sets the scene for the coming battle with the best-armed opponent ever. Surely Middle-Earthian calibre, even if the philosophical details may be more muted, less discussed? in HP.
I simply can't imagine a parent (or a Church?) who could take offense at the ethical messages played out. Particularly stunning was, I thought - where Harry might well have killed.. Wormtail (nee Scabbers-the-rat) in the deserted house in the village. Given the plot and the significance of this character's Evil behavior affecting HP personally - no one would have considered the "ridding of this scourge" other than a Good Thing for all concerned.
But he didn't, and with no sub-rosa ratiocinations or other foolish efforts to 'explain' what appeared to be either something of mercy or about an absolute reluctance to kill at all (see? we Don't Know.. nor does it matter that we don't).
I deem this to be as Large a Universe as Middle Earth. The problems to be solved are, as with all good fiction, perfectly transplantable into our tawdry daily lives (or at least motorcycle weekends..). As you observed, they are quite different, as are the authors' styles and storytelling devices.
And as always: it IS about the "world of duality" as must-be, ever to be believable. 'Good' is meaningless without unGood / Evil (or Microsloth). Sacrifice is meaningless if.. there's even a hint of self-gain in the action or expected approval.
Now Nice that - at least 3 more shall appear. She should be prevented from riding in Pintos, VW- old-Beetles or ANY UAV: for life. (Were I elected dictator).
Also * * * * 2/3
When's #5? Huh? huh? when...
A Rowling Fan, Now.