Do we think there will be any further removed restrictions from x-faction grouping?

Title says it all really, Just wondering if people think we will eventually essentially have no x-factions restrictions (apart from the obvious like PvP and what not)

Really want to play my DK as a NELF but feel compelled to stay horde as literally everyone I play the game with is horde, and I know when there is a new patch/expansion we love smashing out all the content together for the first few weeks (pre raiding/M+, when group content has to be same faction)