Shield update: More shields with more status resist combos and more class related buffs. New shield bashes for certain ones.
Class armor update: Bringing CTR to other class armors besides bombers (Wolver and Gunslinger sets with CTR instead of damage or ASI), more mixed buff sets for Bomber and Sword knights (similar to buffs in the GU armors)
Armor update: Buffing and debuffing certain armors to be more balanced. Adding more type damage and status resist choices for class armors. More Specialist sets, more branches to Jelly, Magic, and Skelly lines with different resists or buffs. Balancing of Chaos and Black Kat sets.
Bomb Update: More damage types for old bombs and status variants, damage and mechanic buffs for Shard bombs, more Piercing (3 lines) and Shadow type bombs (4 lines and one event branch). New bombs with new mechanics (able to combat elite monsters more easily).
Sword update: Buffs and Debuffs for current lines. More type variants for normal damage blades (type leviathan, cutter, etc.). Finishing lines (Cautery and Winmillion).
Sprite update: Refined mechanics for the old sprites as well as introduction of Blue and Green sprites.
LD update: Revamped maps, mechanics, and balancing of the classes. Matchmaking system put in place to make matches more balanced and even. Allowing AT to be a toggleable option for Guild LD.
Market/forge update: Slight tweaks to AH (previewing sprites, being able to remove previously previewed accessories/costumes), adjusting fire crystal drop levels. Brinks getting rarities added to his shop (forge, primal, and grim spark trading). Price reductions for vendors selling items without alchemy lines that extend to 5 star.
My brain says armour balancing but my heart screams LD update.
I'd be very interested in new sprites as well, not to mention a fix for all the skills that are completely broken.