Releasing the crafted gear the same day as expansion launch savage is obnoxious and encourages people to hoard a lot of resources in the vain hope they can cut down some of the rushed grinding for the gear they need, it feels way more intuitive to give time to allow people the proper time to prepare so the savage launch is all on it's own as a big moment for everyone to be ready for together like the delay in 6.2 and 6.4 allowed for.