My biggest wish is higher skill ceiling gameplay with skill based gatekeeping for endgame stuff, thus incentivizing players to improve in order to experience the entire story. This would create moments of accomplishment and pride similar to 2.x coils, and has yet to be matched. I know this won't happen, but I wish it did. Runner up would be savage raids that actually had a big map and checkpoints, maybe dynamic encounters between bosses. Not just trash, but interesting team focused puzzles or something. Third runner up would be in-game help for newbies. Example maybe the game notices the tank body pulled so a moogle pops up that says "maybe try tomahawk, kupo!" What's yours?