Frankly, I a, very disappointed about this.
Remember how much of a fuss (justified so, imo) was made about crafted red weapons not gaining the illusion? Well then, at least we have the chance to have some to drop from emperor champion as well as commendation chests.
However, the red illusions for the new weapons are acquired only by playing on legend difficulty. Also, to make the weapon itself red, it requires the use of crafting with red dust.
All in all, this looks like the stuff is aimed directly and only at the high end players who run legend all day long and sit on piles of red duplicates (or dust salvaged thereof).