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I wouldn't mind console exclusive enchantments... however I do not support a "double jump" feature. I believe it takes a little bit of the gameplay mechanics away adding the ability to jump twice as far or high. Also, it is fairly easy to place one block to jump up one more space or extend one more space- it just seems kinda lame to add this feature in.
I would rather see exclusive enchantments like frost, lightning, or fast-swimming.
I was thinking what if this was an enchantment for the boots? Being able to jump three blocks high instead of two.
Lol it might have to work in conjunction with Feather Falling though for obvious reasons lol
I think the OP suggested it working with boots. However, I just don't believe adding a double jump or extra high jump would be very useful. Sure it has practical uses for getting places or for minigames, but it its just as easy to mine or build a couple blocks in place of jumping.
I do believe in console exclusives though! Just not this one lol it doesn't add to minecraft well