Previously created Luminous and Kaiser DO get the 13 pieces of 'Mystic' equipment.

Just logged in, and got a quest to get them. Will log into my Lumi next to check, but pretty sure it will be there for her too.

Yep.

.....And thus, my level 122 Luminous and my level 120 Kaiser are now more powerful than my 169 Mercedes.

Lmfao. Wow Nexon loves these new classes. Seems the rest of us are s.o.l.