Considering cleared T1-11 Pre-Heawensward in DF (and I mean really and T11 was even my firsttime kill) ... it will work will just need time. I can as beta and 2.0 player repeat that it took for DR Trial back then 8-12 weeks till people stopped ragequitting to Titan HM
Also all Primals are doable with DF. I dont see a point to NOT add the raidroulette finally :/
(Let my shiva que poooopppp really I WANT THAT AST WEP ;_; )