This is purely a fun thread. I am not intending to say 'these things need to be added.' That being said, I was thinking about older final fantasy abilities and spells that I think should make the transition to ffxi.
1. Dragoons used to be able to wear a lance and a shield. Heck, when you joust you always carry both. In thinking about how to implement this, I decided the best idea was for the smaller 'spear class' polearms could be classified as dual-wield capable. Then, just impose a penalty to attack when only using one hand on your lance. Probably difficult to code, but I think dragoons would look pretty cool with a shield as well.
2. Missing Blue Mage Spells.
Roulette. Randomly kills or dooms one party member or target enemy. With a higher probability of killing a party member, it wouldn't be great, but that little chance of instant killing a boss would be interesting.
Frog song. Enemies can do it, why not us?
Level 3 flare, 4 quarter, 5 death/doom. I think the idea of level based targeting would be kind of interesting if situational.
Mighty Guard. Protect and Shell for the party in one cast. Perhaps make it scale so that it never beats a white mage's version.
Missile/Matra Magic. Percentile based damage.
White Wind. Curaga type spell. I would trade healing breeze for this, if only for nostalgia.
3. Blitz attacks.
I know monks are already pretty powerful, so perhaps this could go to another class, but I would like to have the blitz input for combos for a class. Maybe as a 2 hour, maybe as general skill. I liked inputing street fighter like commands to do special attacks.
4. Single serving summons. You expend a large amount of mp, they appear, do massive damage, then leave. I mean, what summoner hasn't wanted to summon Bahamut, Alexander, or Odin since they were introduced.
Once again, these are pipe dreams, so feel free to contribute your own vanadiel dreams.
XI Wiki



