Edit: Also, how are we supposed to get Purple crystals now...they were found exclusively in those weapons.
As the above poster said, they can be RE'd by artificers. They also drop from the Scum and Villainy operation.
OT: I can see why they did it. A lot of people don't know how to stat their class and so only use the pieces that they're "supposed" to use. The result is a lot of people asking "which blaster am I supposed to take?". Now it's just "Campaign Eliminator Blaster" or somesuch, and it matches the name of the rest of their set.
That said, I really liked the names on the old weapons. They certainly added a sense of uniqueness to the weapon, even if everyone else had one.