Primal Light Dragon
Forget new classes (not going to happen), new weapons (we're drowning in them), new cores (as the weapons, so the cores), and even wars.
What I'd love to see is new work on the story. New characters or areas, new ideas from a sadly small, but sometimes frighteningly talented team.
If 2020 marks the resurgence of Epicduel, it will be because of new development in the story or the lore, not because of new shinies that cost varium or grinding.
Hell, new game representations of tanks or chess or whatever- I'd love to be able to decorate Faction Headquarters, or buy defenses that boost progress in a war. Anything new, ED. Anything.
Ego sum egredietur tempestas, manifestum chaos, et ascendit hominum.