Honestly TL:DR of any guide. Is learn your markets, it's as simple as that. Learn who's in it, learn what's profitable, watch different time tables. I've earned 2 million profit OFF 1 market and half set up TSM. I've barely tried before this I was a hardcore raider, only made gold over the years through BOE farming and run sales (which are goood, don't get me wrong) but I want to be making the multiple gold capped characters.
Battle for Azeroth est la septième extension de World of Warcraft et développée par Blizzard. Ce nouveau disque additionnel de WoW prend place en Azeroth, sur les nouveaux continents de Kul Tiras et de Zandalar. Alors que la Légion ardente est vaincue, le conflit entre la Horde et l'Alliance refait surface, nous amenant à la recherche de nouveaux alliés, mais aussi à la rencontre de nouvelles menaces.
Thing is, as in real life, opportunity cost is the real key on this. I'm getting 2 tokens per month quite easily with just 3 toons (1 maxed only (yeah, pretty damn inefficient but I lack a lot of time to play :p)) just by flipping couple of things, food, flask, potions, bags, shirts (yeah, shirts!!), etc etc. Every damn penny/gold counts :p, just have to learn how your realm market works, what niches exist, which items are needed and undersupplied and which are oversupplied.
Today's events set the stage for major changes in the game, including the expansion pre-patch, which will include all the game systems, cosmetic and other changes for the new expansion - basically, everything but the content in the expansion's new zones. There has been no official announcement of the prepatch launch date, but if I were a betting woman, I'd say July 10 looks awfully likely. [Edit: All right, or the 17th. But plan for the worst, people.]
I think you have legitimate concerns, but to be fair the squish already happened, the numbers just haven't caught up yet. You can already craft current-expansion items starting at crafting level 1, and those crafts generally award 3-5 levels each. So squishing the ranks from 800 down to 100, doesn't functionally change anything, it just allows crafts to only award 1 skill point per use, instead of 5.
Why are you saying this would cut your margins down? If anything, it would increase your margins because all those scrapper mats are gonna be sold on the AH driving down the price, so each item is less expensive for you to craft, so your margins get bigger if keeping the same sale price. So long term this would probably drive down your sale price just due to supply and demand, so you would have to sell more to keep the same income, however that’s unrelated to your margins.

There's a few profession crafted pets in BfA on the horizon - Battle for Azeroth Tailoring is getting a Hot Air Balloon style pet, and BfA Alchemy looks to be getting a brand new Transmute Meat to Pet. There are some mount buff consumables from both BfA Leatherworking in the form of a mount barding, and Blacksmithing in Battle for Azeroth will be able to craft Stirrups and Hoofplates to increase mount speed and allow you to interact with things while mounted.
×