Nah, they just need to make the mk.2 easier.
As dave said, it's not that the mk.3 is too easy it's the mk.2 is too hard, which is a balance issue between the reinforced plates and other materials. But honestly though, reinforced plates are pretty easy really, just some iron plates that really make at a high rate, and some screws, or, if you find the alternate, some plates and some copper wire, which, at that level, you rarely use.