questio one, jump question, if i'm right the jump ability will be a move used by dragoon's when they bring out the new job's, so you still won't be jump around all hyper while you run (if that's your biggest gripe with the game i would say its not that big a problem)

question two, grinding is good come on man what's up with grinding. but when you get bored of grinding, get a group and go behest, behests start every half hour in camps and you and your group will chase down large group's of mob's, and when you have killed them there is a boss or two to kill.

question three, sorry mate my crystal ball is broken