Ever look at the components those purples require in order to craft? It's basically raid gear people. Of course you're going to pick the very end of the line best stat gear to hold up as being OP.
Actually, I was able to craft all three Rakatas after 3 days of hard mode BT and FE.
My suggestion is to remove the Biochem requirement on non-Rakata reusables. Might gut the stim/adrenal market, but Biochem can always still sell implants.