"Not easy" isn't the best way to describe it though. I see it more as "doing it right". It serves to create a unified look close to what's on screen, and at the same time implement a tested and proven assembly method that stands up to the rigors of trooping with little to no risk of accidents where things come undone or break and spoil the illusion.
If it's easy or hard depends on the person. But what matters to me is the will to work on getting it right.
There is also the perceived value, that makes us proud to be centurion, and that is very important. For without pride, there is not much to motivate the effort. And without that, we might as well start wearing FX buckets again. So to care for these soft values, an "aura" of exclusivity needs to exist to keep it attractive. And if I was to approve anyone that asked without a little bit of a challenge, then it devalues the brand and the whole program. And that is not fair to those that have worked really hard on their kits. Nor would the next guy or girl have as much motivation to improve if there is nothing to gain.