It sure would be nice if the developers could just press the "more engaging quality content" button or the "just start the relic weapons" earlier button, but we all know that's not how that works. It's also not really an answer to the question that Vrankyl asked. It's like if you asked someone for a drink and they handed you an empty glass. It's only part of the equation.

What is "engaging quality content," and would it be engaging quality content for just you or for much of the player base? What would "starting the relic weapons earlier" actually entail? How long would an appropriate amount of said "content" take, and how would you balance that content to be doable in a reasonable amount of time by both those who can play 12 hours a day and those who can't even play 12 hours in a week? How would you ensure that it not only was "engaging" but remained of high "quality" for it's duration? How would you ensure that the rewards are appealing to enough people to make the investment in development time and resources worthwhile?

Let's say the developers said "Okay, relic weapons starting on May 5!" and they put out a quick quest that then leads into a grind where you have to do 1000 FATEs in every expansion to advance to the next step. There's your "The relic weapon starts earlier." I'm sure that's not really what anyone would want and, even if they did want that, it would completely freeze out players who had limited playing time (unless they severely nerfed that requirement later on, which would just tick off those who put in the work early).