I'm done with this quest too - to be more precisely I finished it Or I will finish it, still need two more but I'm having the quests done on 3 of my DD, will give it in tomorrow and friday because of the rewards.
I had all Marauders including the new guys but I can not tell how often the quest was "kill Marauders" and how often I had the fabled guys. Did the last run some minutes ago, this time it was the Marauder, he approached in 2-5-1. The fabled would have been finished much earlier.
But now I'm done for a while with the archive except if both my favorite archive partner and myself are having at least 4 hours time to go as far as we can.
PC EU
1 Healer, 1 Tank, 3 DD, 5 more Toons just for fun