FF6 - Brave New World is a fairly complete overhaul of Final Fantasy VI, featuring…

-Character-based esper restrictions & new stat boosts that promote greater diversity and allow for customized development.
-Esper leveling system that disassociates esper bonuses from traditional levels.
-New and reworked formulas which rescue everything that isn’t magic or magic evasion from the dump-stat heap.
-Rebalanced equipment, items, spells, and skills that aim to remove dead weight and give players more (and better) choices.
-A complete overhaul of enemies from their stats to their behavior to better challenge veteran players and newcomers alike.
-Tons of bugfixes, as well as remedies to many of the game’s more annoying aspects (such as rage hunting taking a lifetime).
-And much, much more