I wish, I'm so sick of rogue-style DW/Bow setups. But I don't see anything in 2H that can make up for Rending Slashes, Blade Cloak and the passives. You'll also lose crit chance without daggers as 2H doesn't have an equivalent.
Follow Up might be helpful for heavy attack rotations, but I fear it will mostly be eaten up by initial hits of DoT skills. Depending on how light attacks perform, the new Empower might also help when using Wrecking Blow.
Of course having an execute for classes that don't have access to one otherwise is nice, but you'll lose the Slaughter passive, which I'm not sure is worth the trade.
I'm not sure what they could do to make 2H a great option for PvE. Maybe make the ultimate a good alternative to Flawless Dawnbreaker?