I have a HUO LE that I just got a non-solicited offered for $7700. Really thought about selling it but it is just such a great game. As I toyed with the idea of selling over a month, buyer found one close to him so he grabbed it which was the right call!
Anyhow, I have had a LOTR since the first day I got into this hobby. (Bought a NIB Tron and LOTR same week). When I asked my family about selling LOTR none of them wanted me to sell. My family almost never plays pinball, lol, but LOTR even holds a little place in their hearts.
So, yeah, I think a vault would probably do pretty well. That said, there sure are a LOT of new pins coming out and there is a ton of competition so who knows.