This is a big part of why I'm so hellbent on our getting a center at 11, I've been quite vocal regarding my skepticism about how Miller will age.
Anyone we draft will be 18 and likely need at least a couple seasons of develop, it's unlikely we get an impact player off the hop, but even if it takes them 4-5 years that lines up with Miller's being 34-35. The only center prospect we have who maybe projects as top six is Raty, not good enough.
4-5 years also takes Pettersson to 29-30, we absolutely need to be thinking about who steps up behind him sooner than later, and about who takes over for Miller. If we want any semblance of a sustainable window we need to be bolstering our prospect pool at center sooner than later.
We aren't guaranteed success over the next 4-5 seasons and it'll fly by quicker than people think.