I would love to see crafting, But when i say that id love to see a crafting system ive never seen, Wow's crafting to me is somthing i hope not to see, The reason is very few items are useful take alchemy, you litreally just use the transmute feature and the flasks/potions, thats it. And the potions you use are simply "Increse X for Z seconds" i loved using things like swiftness potions in pvp, or the potion that made you free from snares.
What i hope to see is a crafting system that everyone can benefit from, im not saying every item you make needs to be useful 100% of the game, but why not include some items that can be made when your a begginer that veteran players will still need, completely making this up from my head but heres an exmaple of what i mean,
Player Z has played titan for 5 years, player X has only just started, Player X gets into crafting but becuase hes so new he cannot make anything that is useful for player Z, But wait, he can, he can make a potion that makes player Z see a certain type of creature in any zone, that potion is needed by player Z becuase without it he might get killed by the mobs he cannot see, Player X also needs that potion now and then becuase the same type of mob lurks around one of his newer area's This means both players have a use for that potion, and player X can craft it becuase it isnt an end-game craft he can squeeze a small profit from it becuase player Z doesnt want to gather the low materials needed in the lower zones, player X gathers these to level up his profession.
That may sound confusing but on recape, Player X is gathering low level materials that older players dont want to waste there time on, that means he can create a potion that is still needed by veteran players so he can sell it.