Yeah, I'm kinda weird about this. I'm fine with replacing screws and O-Rings, I'm going to rebuild a USS Flagg and I plan on using reproduction stickers, but when it comes to pieces like deck clips and Heavy Metal's mike I only want originals in my collection.
That being said if other people want reproduction pieces that's fine for me, because my collection is mine and their collection is theirs. I would appreciate being able to tell the difference, but there's nothing I can really do to change what others do. All I can do is push myself to be a better expert to avoid accidentally getting reproductions.