my suggestion is:..
Wood Wall: weak protection.
Stone wall:strong protection.
Market:Trade with players or trade resources to resources.
Pet:You can ride it or let it help you in combat.
Arena:Player vs. player but with hero only.
Daily mission:medium reward but once in a day.
Boss mission:large reward but hard.
Repeatable mission:small reward but repeatable.
Tha'ts all we need
 "How Dare You"){kind=icon}
 "Loot Heroes"){kind=icon}
 "Once Upon A Life"){kind=icon}
 "Idle Mine"){kind=icon}
 "Skyshard Heroes"){kind=icon}
 "A small talk at the back of beyond"){kind=icon}
 "Urbex"){kind=icon}
 "Hands of War 3"){kind=icon}
 "The King's League: Odyssey"){kind=icon}
 "Discovery"){kind=icon}
 "Multitask"){kind=icon}
 "MedievalShark"){kind=icon}
 "Lazerman"){kind=icon}
 "Kick Out Bieber 2"){kind=icon}
 "Brick-Force"){kind=icon}
Yes, we made the announcer biased like that :P