I like that saber construction idea, but I do have two points of criticism. One is that I would really prefer that a lightsaber not be put together in seconds, but in long weeks and months of work. This is how I always imagined it. In the deleted scenes, from what I gathered Luke was just making some final adjustment to his saber, not actually putting it together.
The second is that it feels a little too "in-your-face", like something that we don't need to see, we just get it.
Those are my 2 cents.
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