While I can certainly, erm, "appreciate" spiff's take on this, here's my two cents:
PERSONALLY, I wouldn't use an original cab. Especially when pre-cut repro cabs are readily available. In my neck of the woods these cabs are MUCH harder to come by than it is for the majority of you guys, so when I see a legit cab I'd love to own get used for something like this it does kiiiinda make me sad. But hey, your cab and all...
As far as weathered or mint: I usually lean toward restored but in the case of pseudo-weathered, I'd think that'd be cool IF it was going in a line-up of other patina'd games. If it's the only weathered example in a line-up of pristine games it'll look off. Same if it's pristine and the others are not.
As for Felix not being "worth" a cab, I get it. It's a shallow one-off game made for a movie. But it's still an awesome cab/movie tie-in! To me it's like Wyo's cabs. I don't think standing up to play Zelda or Ducktales is a particularly enjoyable way to experience those games. But I'll be DAMNED if I wouldn't own both those cabs already if I only had that kinda scratch!
In other words, it's a cab for a cab's sake, not necessarily for the game it houses. (Hence why I vote repro)