In Dragonflight, Professions received a complete overhaul, changing the system from one that was relatively one-note into a more nuanced way of creating items. Secondary crafting stats, such as Inspiration and Resourcefulness, were introduced in order to better target the ability to craft specific ways: if you wanted to earn a lot of bonus materials simply by crafting other people's items, Resourcefulness could allow you to do that, while being Inspired might allow you to craft the best gear more easily.
Inspiration, however, was quickly determined to be a «meta» crafting stat — allowing players to create top-of-the-line gear well before their Profession Skill would technically allow it. This Secondary crafting stat was the subject of many conversations among players, some enjoying the ability to «hit it big,» while others lamented the added layer of RNG to crafting to min-max their gear.
In The War Within, however, it seems that Inspiration is getting a rework — and will be removed entirely in favor of a new system. We've datamined a new Alchemy Phial, the Phial of Focused Inspiration, which indicates that Inspiration will no longer exist in the manner we're used to.
Blizzard released a crafting-specific Professions Update called Concentration in The War Within, detailing the new system, Concentration:
Greetings members of the Artisan’s Consortium!
As we reveal much of the content coming in The War Within, we’d like discuss a new system we’re cooking up for professions.
Inspiration
We added Inspiration in Dragonflight to try and capture the fantasy of critical hits while crafting.
If you weren’t quite capped out on your gear and specializations for a given craft, or if you weren’t using max quality reagents to guarantee that max quality item, Inspiration was a way to get that lucky crit. It could save you some money (by using lower-quality reagents) and you could craft a better item than you would otherwise.
That was the hope at least, but it ended up