Fire Emblem Heroes new update revealed fantastic rewards system for all players. Also, a list of heroes from players all over the world showed the best characters worth keeping. Since there is no official list yet, this list is based on opinions, therefore, it should be taken with a grain of salt.
Rewards System. First on the list of rewards is 10,000 Hero Feathers. This reward is in conjunction to the latest retweet event success in which Nintendo hosted. Next is a one-time bonus of 10 Duelling Crests players will receive once logging in on March 13. Last on the list are the new quests. These quests are effective until March 1, and players will receive 1,000 Hero Feathers for winning 10 Arena Duels on intermediate or higher difficulty.
Tier List. As of the moment, since the game has not been exploited thoroughly yet, the best units for Fire Emblem Heroes are the Grey archer Takumi and Green axe-user Hector5-starar heroes are the best units to develop, IGN listed all the 5 Star units available. 5-star heroes such as Azura (Lady of the Lake), Hinoka (Warrior Princess), Linde (Light Mage), Hector (General of Ostia), Minerva (Red Dragoon), Leo (Sorcerous Prince), and much more are the units worth keeping. Check out the complete list of Heroes here.
To effectively play in Fire Emblem Heroes it is important to bank on great characters and tiers. It is as important to determine which tier these heroes belong and as the same determine what they can bring into the table. Here are the different tiers; Tier 1 or Grade S Heroes (The Best), Tier 2 or Grade A Heroes (Great), Tier 3 or Grade B Heroes (Average), and Tier 4 or Grade C Heroes (Honorable Mentions). Players can obtain these heroes via Summon Orb section located in the middle of the Fire Emblem Heroes Menu. It requires 20 orbs to summon heroes.