Fortifying - Ability to fortify your buildings with troops. This is for non-turret buildings like barracks, staging area, etc. Based on the level of the building you can garrison some troops inside that will auto-spawn when the building is attacked. Now keep in mind once the troops are activated, if they are killed in the battle the player must manually re-inforce the building.
Resources- A new and improved use. Introduce a few new buildings that allow you to refine resources into ingame items for offense, defense, and trade.
- Offensive player created items (5/10/15% atk boost for 5/10/15sec) (5/10/15% troop speed increase for 5/10/15sec) etc
- Defensive player created items (5/10/15% atk boost for towers for 1/5/10 hours) (5/10/15% increase ROF for towers 1/5/10 hours) etc
- Trade Goods (create your own resource caches and allow for trading between players)
-Vehicle Troops cost steel, fuel, and food to build
-Ground troops cost steel, coal , and food to build
Air Troops and Anti-air Turrets - New units that are immune to a certain type of ground turret and the anti-air turrets to counter.
Finally Id like to see the ability to challenge players into an open battlefield or Duels. Maybe allow the avatar of the player to be an actuall controlled unit that has a few unique abilities, grows in power according to the players level, if he/she dies in battle has a 15min-1hr cd before you are able to use him/her again, and if he/she is alive at the end of battle will grant an Xp bonus or increased chance to find items based on how much Damage your avatar unit does.
Thank you for your good work on Edgeworld and Final Eden. I hope to see this style of MMO grow more. More lore More items More levels and most important MORE CHALLENGING gameplay.