I do like the idea a lot and it's a good way to kick things off. I do imagine Hermione and Harry may be asked to contribute some things to the newsletter. I do imagine with Ron feeling left out in terms of his two friends practicing spells together, he may have the opportunity to slowly become more corrupt this year, which I assume a Death Eater may approach him. Yes, there is the plan to lure Harry alone at the end of everything but to cause strain with his friends might be another asset Voldemort could consider. At any rate, Ron's paranoia could turn him into a darker sort of person with this being the thing that sets off his decline into madness and soon acting as a Death Eater himself since Harry continues to endanger himself and those around him, like his sister and brothers possibly. I figure with Ginny we could have her in the background, probably sharing her a NPC if needed?