Old Single Target DoT heroes - their DoT just doesn’t scale well enough to compete with all the HP from emblems/aethers/minions etc.
- Natalya - great hero concept but in 5 turns deals not even 30% hp of some heroes… Total DoT should be at least doubled, or target number increased
- Morgan la Fay - same as above…
Niche Heroes of the Month that were never good in their niche to begin with:
- Aegir - should be undispellable or cast spirit link and def down on enemies as well
- Ranvir - instead of 30% missing, he should have 30% chance for tiles dealing -80% less damage
- Reuben - have him reflect % of DoT instead, or add a buff for all allies to deal 50% increased DoT damage
- Chakkoszrot - change the speed or improve the damage significantly
- Russell - add a dispell
- Zulag - apply her buffs to all allies
- Noor - make her average speed or regenerate all allies health for each destroyed minion
- Anzogh - increase damage % or increase the healing to 50%
- Balbar - increase direct damage, make target awaken only when dmg dealt is higher than 100
- Yang-Mai - just increase the % chance for extra hits
Old Event Heroes - that are very underwhelming for some reason compared to others of the same rarity:
- Guardian Owl - increase the damage, add self-damage reduction or make his healing/defense up apply to all remaining allies
- Marie Therese - change heal to direct healing or increase the value; add 100% chance to revive all dead allies as the zombies
- Boss Wolf - he needs to deal direct damage at this point and his buffs need to apply to all allies
- Red Hood - increase dmg and minions HP; make minions deal dmg and perhaps even heal its owner based on the damage dealt by minion
Newer Event Heroes who were too weak compared to everyone else even in their niche:
- Jade - her buffs need to apply to all allies from charge 1; she needs to deal direct damage; maybe even change the dodge to regular type (dodges all, not only damage dealing skills) or make it uncleansable
- Theobald - should be average speed
- Esme - increase the healing or add cleanse, make the fiend prevention unconditional (i.e. always prevent the fiends, not only for allies who had fiends)
- Quartz - change healing to direct or increase it
- Eloise - increase damage
Season 2 and Season 3 heroes who were underwhelming from the start even in their niche:
- Misandra - increase % chance for extra hits to 75%
- Mok-Arr - increase the damage dealt significantly
- Fenrir - regenerate 100% mana if target is killed
- Norns - increase direct damage, add a debuff where target receives increased dmg from strong element
- Lady Loki - change speed to fast
Note that most of those are very fun hero concepts on paper that would pretty much enrich the game a lot - they are just far weaker than the currently dominating AoE attack dealers and other OP things. So we are pretty much forced to sacrifice interesting concepts and mechanics for pure fire power and that doesn’t make the game fun or interesting 