What I "smell" with these challenge events is a bit of "We've put a lot of effort into developing the crafting addition to the MA and players aren't using it much. I know... someone suggests, let's put together an event giving out a few crafting bits as prizes so that players get the hang of using our new crafting addition then hopefully it'll get used more often" I could be totally wrong here as this is just my hunch. If however I'm right and there is an element of truth in my gut feelings, then I'd strongly suggest that the limitations of the 5 crafting recipes are the real reason why crafting isn't too popular. I'd guess that like myself, most players have ample 1x1, 1x2, 2x1, 2x2 culture buildings, ample spells, ample relics and the small kp bundles aren't exactly inspiring either. In summary most of the time for me all 5 recipes have zero appeal, very occasionally I see something there that I'll choose to craft but mostly it's just to use up the crafting bits I've gained. For certain, I won't be spending 75 diamonds a go to see the next set of 5 recipes that don't appeal Sorry guys, but if you are hoping to fix crafting with these challenge event rewards then I think you are barking up the wrong tree.