Agreed i think it would be a fun dynamic. But i have also heard mention from the devs interview that they have considered having the dk come from the marauder and have the act of being the dk change some the tanky abilities that youd get from glad to something more dd like but i don't know if they droped the idea. Also the marauder makes sense for a dk as well as it already uses large weapons so change from axe to scythe, and thaum / lancer secondaries would actually work.