It’s not about difficulty. It’s more about finding it entertaining enough to be worth my time (and money).
They can unlock it now or later… I don’t mind either way. Other than playing a couple of free trial weekends, I waited for years for Legion to unlock before getting into it, so I am fine with waiting.
Since I have maybe another month or so of things that I’d like to do in Legion, and since I am still currently subbed (but about to go on a break), I figured I would make it known that I would like to spend more money on the game if they can see to opening up that flight sooner rather than later.