It's not a case of giving a crap (we wouldn't be here if we didn't give a crap), it's more a case of where to allocate time and priorities on the list, and ofcourse the things that DICE wish to achieve with the game themselves too.
Motto is never say never, we do take on a lot of feedback and we definitely hear the community ask for this mode a lot too, just that there are other focuses ongoing at the moment.
Watching people establish a little code via emotes and lightsaber usages to initiate a duel over this past year or so has been quite a charming thing to witness.