Not sure if this a bug or by design, but eitherway it's a BIG problem.
I was just trying to make an item for one of the members of my guild who is level 11. I have just noticed that all the items in crafting list are min level requirement 21 (probably due to the crafting skill of 30).
The problem with that is, as people get better, they are going to be unable to construct items for lower levels characters.
I had my poor member grind for the materials, and specifically told him to choose the lowest level materials to keep the level low, but when the starting item is already at 21, then there was little point in him doing that.