Let's see:
- Not just a better, but a good netcode. This should be a priority.
- Drop the king of the hill's set-up from only lobbies, and just make pairs for simultanuous matches. Also, when waiting for a match, make training mode available.
- A lot of unlockables. Concept Arts, CG arts, pin-ups, costumes, costume colours, cosmetics for the avatar if we'll have a lobby like in DoA4...
- All returning costumes via DLC can be free downloable for those with a copy of it in DoA5 and his reinstallments.
- Returning stages: Aqua Palace, Ice Cave, Kyoto in Bloom, Whitewater's Valley, Gambler's Paradise, Seaside Market, Eternal Helix, Temple of the Mountain.
- A new female korean fighter who use hapkido. An afroamerican woman similar to Queen Latifah in measurements who fights with sumo.
- Guest characters: Rachel, Momiji (Ninja Gaiden), Luna (Venus Vacation), William Adams (Nioh), Wang Yuanji or Lianshi (Dynasty Warriors), Mai Shiranui (The King of Fighters), Blaze Fielding (Streets of Rage), Tifa Lockhart (Final Fantasy VII), Lili (Tekken), Baiken (Guilty Gear) and Litchi Faye Ling (Blaz Blue).
- Not lootboxes.
- And story mode similar to DoA5's, but with a better involvement of the cast in the plot, and not just the ninjas. Also unlockable cinematics via Arcade Mode.
- Character's specific intros and outros. More intros and outros, and if tag battle comes back, more pair intros and outros.
- A good tutorial with a feeling of "from noob to pro" xD
- A lot of support to the meta via patches for balance, and DLCs with stages and characters.
- An for redesigns, I just link myself
http://www.freestepdodge.com/threads/lets-talk-about-redesigns.7096/page-65#post-377362