PSA: Don't waste your crystals on Sky High

The future isn't bright for this ability. Here are its multipliers before and after the upcoming mass ability buff:

Sky High

    Number of hits: 4 -> 4 (unchanged)
    Multiplier per hit: 1.06/1.18/1.29/1.41/1.53/1.65 -> 1.18/1.29/1.41/1.53/1.65/1.77 (with 0/1/2/3/4/5 jumping allies)
    Total multiplier: 4.24/4.72/5.16/5.64/6.12/6.60 -> 4.72/5.16/5.64/6.12/6.60/7.08 (with 0/1/2/3/4/5 jumping allies)

==== However Dragoon Jump is also getting buffed...

Dragoon Jump

    Number of hits: 2 -> 4
    Multiplier per hit: 2.35 -> 1.23
    Total multiplier: 4.70 -> 4.92

=== Since it's realistically impossible to consistently take advantage of Sky High's multiplier boost gimmick, it will be outright outclassed by Dragoon Jump for non-elemental damage.

But Sky High also deals wind damage, so it's still good right? Well, about that, the upcoming FFVII Rude/Elena event introduces Aerial Dive, a wind-elemental clone of Lightning Dive that is only marginally weaker (4 hits, total multiplier of 4.52).

Moral of the story: feel free to unlock a copy of Sky High for your dragoons, but don't bother honing it.