add notes and questions for n28107

[stickies-v]

cc @dergoegge

[stickies-v]

Thanks @LarryRuane, sorry I merged quite quickly indeed - appreciate the review! dergoegge may have more comments too so I'll wait for that.

[LarryRuane]

@stickies-v, sounds good, I'll try to do a content-related review as well (but don't wait for me).