Before I get into this, yes this is not blizzlike.
Now then, let's begin.
I believe we should disable all quest sharing in Battlegrounds (across all realms). Like I said above, I know this isn't blizzlike, because people could (and still can as far as I know) share quests in Battlegrounds.
However, much like disabling the option to turn the icc buff off for non-leaders, I think this non-blizzlike change will be welcomed by a vast majority of the population.
Hope staff agrees, and this is possible to accomplish.