These are just some Ideas I had to make the jobs I play more fun for me!!
Monk: Riddle of Earth removed and Riddle of Fire made into a trait that increases Fist of Fire from 5% to 10%. In place of Riddle of Earth have a trait called Form Mastery or Form Shift Mastery that allows Form Shift to continue your current level of Grease Lightning stacks but not give or add to them. Bootshine should give Chakra stacks 100% of the time when attacking from the rear. Tornado Kick put on a 60 second or 30 second cool down and remove "Removes Grease Lightning" from it.
Dragoon: Remove animation lock from every ability. Jump no longer returns you to starting position but leaves you where you land. Spineshatter Dive reduced to 30 seconds and Stun removed. Dragon Fire Dive leaves an AoE DoT on the ground. Battle Litany lowered to 2 minute cool down. Mirage Dive removed. Instead have a Jump Mastery trait so when you Jump or Spineshatter Dive you get a stacking buff that increases your damage by 2% and your recast time by 1% to a max of 5 stacks as long as you keep Blood of the Dragon going. Geirskogul made 30 seconds or 20 seconds. Life of the Dragon should auto trigger when you have 5 stacks and will remain until you loose Blood of the Dragon. Nastornd made 30 seconds or 20 seconds.
Ninja: Fine as is I think
Sam: TP usage on it's AoE moves are a little high. I feel 120 for Fuga and 100 for Mangetsu and Oka would be better than 140 and 140.
RDM: Fine as is I think. (Please only upgrade our spells when we go from lvl 70 - 80. New additional spells would ruin it's flow I think, and it already flows SOOOOOO good.)
BLM: Maybe make Foul insta cast?
SMN: Tear it down, remake it and separate it from SCH.
BRD: Would rather have Reign of Death combo from Quick Noct since we only get Bloodletter procs from Mage's Ballad now. Would also like Quick Noct swapped out for Wide Volley since Bards are supposed to be at range...
MCH: Remove the turrets and make the job more about the gun and the attachments to the gun.... other than that I don't play it that much.
Tanks: I don't play them.
Healers: I don't play them.