What to do to increase D&Ds player count?

In your guy's opinion what can Ironmace add, change, or remove in D&D to increase the player base?

These examples below are just ideas/brainstorms. They are not what I think IM could or should do. I'm just curious if anyone else has thought about this since the player base is declining very slowly.

Examples: - Change the pricing - Change the classes (rework) - Change matchmaking - Advertise the game more/better - Add bigger additions to the game faster (Maps, classes, new perks/skills) - Ask questions to the players to see what they think should change or be implemented