Personally I don't mind that Jump has a risk involved, it makes you think a bit more before using it.

Having said that I do wish there was bit more to it, either more damage (the move does have a good deal of risk associated with it especially the further on you go) or giving the dragoon a special buff, or a secondary debuff on the target that is useful to the whole group (which would be nice as it would provide some extra utility for dragoons and make them more wanted in raids etc).