which better: kanji dictionary ordered according to JLPT or usage frequency?

[mgl2015]

Hi all,
I am working on a kanji dictionary that will make kanji learning easy. Each kanji is going to be explained using their etymology as much as possible.
I wonder if it should be structured according to JLPT kanji order or most used kanji frequency / most common kanji list? What do you think which is better for you, a japanese language learner. Is JLPT really important? I feel that a lot of people study to pass N5 or N4 or whatever level.

Which type of dictionary is more useful and you would buy?

Thank you all, in advance. Looking forward to your feedback.