2 questions:

1)Would it be worth making a pool for these 10th anniversary One Piece pictures by various JUMP manga artists?

2)I have some more by different manga artists, but they have been coloured in by fans, and not in the original b/w, would they be worth uploading?

1) I say yes.
2) I guess we could later parent them with the original versions once we find them. Just make sure to tag them as 'photoshopped'.