Suggestion #1 while a good idea for those who want to work effectively, it doesn’t matter in terms of final quality, LR will apply the edits in a preferred processing order. That’s way cool. In Photoshop, burning the pixels in the less than ideal order can be quite problematic in terms of effective workflow but in terms of image quality.
#3, Clarity is a very useful Midtone contrast boost that really works very well when not overdone (or overdone for an effect. After all, its non destructive like all other edits, you can always “go back”). So yes, moderation is always appropriate.
#7, well for me (and many others), using a default custom DNG profile is a major big deal as a starting point. Depending on your camera, the Adobe default is OK or not so much (YMMV).
The tip about white is super, super good! It will greatly reduce the “My prints are too dark” effect, and it would be nice if we could fully control the amount (say 20% all around the image). Folks can test this in Photoshop easily. Edit an image for tone with a dark bkgnd until it looks good. Print darker than you’d like compared to the display? Put white around the image and look at it now. Probably will look “too dark”.