It’s been a long time since I’ve read it and I only read this first adventure but I always was impressed with it.
I think there's a "safe spaces" element as well. It's not just the system-- the system becomes a shorthand for a whole host of philosophies and genre conventions. Ideally, there'd be all sorts of communities at an atomic level and through federation (or something similar) we would join all the ones that interested us and crosspost things that extend over boundaries or confound the boundaries that we've drawn. That's some of the promise of a Lemmy (or Reddit) but the reality is when end up in walled off silos instead of interconnected gardens.
So the other element is player expectations. Me— I personally might because I tend to expect those things, having played many TTRPGs. My daughter, who has no such experiential baggage, might not.
Back to HP, I’m not an expert on the lore but, generally, all the wands are interchangeable, right? Other than the three master wands or whatever they’re called. So in that case, a wand, like a mundane tool, might not need stats/mechanics.
Ultimately, it’ll be on you to set up the context and sell the players on the concept to overcome any expectations.
I’ve said that as well… the dice are not your friend!