But every new character made that wants to craft old expansion stuff will have to level using expansion specific materials. Stocking up on profession materials that are already high in demand can be a great idea. This will primarily be materials used to craft the various mounts. Ghost Iron, Trillium, Living Steel, Pyrium etc. are all great candidates to stock up on.
D Daggerspine Alliance Daggerspine Horde Dalaran Alliance Dalaran Horde Dalvengyr Alliance Dalvengyr Horde Darkmoon Faire Alliance Darkmoon Faire Horde Darksorrow Alliance Darksorrow Horde Darkspear Alliance Darkspear Horde Das Konsortium Alliance Das Konsortium Horde Das Syndikat Alliance Das Syndikat Horde Deathwing Alliance Deathwing Horde Defias Brotherhood Alliance Defias Brotherhood Horde Dentarg Alliance Dentarg Horde Der abyssische Rat Alliance Der abyssische Rat Horde Der Mithrilorden Alliance Der Mithrilorden Horde Der Rat von Dalaran Alliance Der Rat von Dalaran Horde Destromath Alliance Destromath Horde Dethecus Alliance Dethecus Horde Die Aldor Alliance Die Aldor Horde Die Arguswacht Alliance Die Arguswacht Horde Die ewige Wacht Alliance Die ewige Wacht Horde Die Nachtwache Alliance Die Nachtwache Horde Die Silberne Hand Alliance Die Silberne Hand Horde Die Todeskrallen Alliance Die Todeskrallen Horde Doomhammer Alliance Doomhammer Horde Draenor Alliance Draenor Horde Dragonblight Alliance Dragonblight Horde Dragonmaw Alliance Dragonmaw Horde Drak'thul Alliance Drak'thul Horde Drek'Thar Alliance Drek'Thar Horde Dun Modr Alliance Dun Modr Horde Dun Morogh Alliance Dun Morogh Horde Dunemaul Alliance Dunemaul Horde Durotan Alliance Durotan Horde
When an allied race has been unlocked for a player, new characters from that race will start at level 20. If a player levels an Allied race from 20 to level 110 without using character boosts, they will be rewarded with a unique "Heritage Armor" for transmogrification that reflects the unique lore behind the race but is limited for use to that race. Doing the quests to unlock the allied races will also unlock the races' unique mounts for use by the characters of their faction. The void elves, Lightforged draenei, Highmountain tauren, and Nightborne, as races tied to the storyline for Legion, were made available with the preorder on January 30, 2018. The Dark Iron dwarves and the Mag'har orcs are made available upon completing the "War Campaign" in Kul Tiras and Zandalar and reaching Exalted with one faction's War Campaign reputation; the Kul Tiran humans and Zandalari will be made available later in the expansion. Game director Ion Hazzikostas also indicated that additional Allied Races may be available in the future.
Use enchanting to craft tomes of illusions. Every expansion has its own mats, and they're all the easiest thing in the world to farm. You run a dungeon with an enchantor, disenchant everything, gather some elementals or gems for pandaria, and craft a tome which can sell for a good amount if you babysit it well. Sold a draenor one for 22k the other day, and Pandaria ones for 7k and 9k. >THIS IS AN EXAMPLE. If the prices aren't interesting on your server, find something else. It's that simple.<
I think that's server dependant. I make a lot of Golems, but the price on my server is high enough that you could buy all the living steel and still make about 20K (almost 200kg on AH). Its just that you proc all the way up the chain. You proc 20% of your trillium, and then 20% of your living steel. SoH and Ghost Iron are such low effort farms, too. 20% of 180 Trillium Bars at 500g is 18k more profit, 20% of 150 Living Steel at 3500g is another 105kg. That's an extra 25k profit per Golem. If they stop selling stockpile them for the next expansion, they always boom with the price of herbs. And a consistent 20% proc rate is the opposite of RNG, its extra free stuff as a benefit to completing an extra quest (not to mention for new alchemists the investment of leveling Vanilla Alchemy). You're looking for some get rich quick scheme, where the real way to build wealth is patience and volume. No market is going to be viable because you want it to be. Only because you make it viable.