- A hero with buffs/debuffs with the day/night cycle.
- A hero not invisible, but very, very transparent.
- A hero that can put some kind of "free permanent wards", like the old Keeper.
- A hero that can "heal" towers and/or structures, like the old Keeper.
- A hero that can create permanent structures, maybe mini-towers, walls, or something like that.
- A hero with a global-stun. Will be fun.
- A hero that can "create" items, maybe health and/or mana potions.
- A hero that can permanent "enchant" other heros items, maybe with a "+1/+2/+3/+4 all stats" or something.
- A hero with an +armour aura.
- A hero with an "anti-invisibility" aura, permanent eye (more radius per level)
- A hero that can really "fly" over the forest.
- A hero that can "cooldown" all your spells, or the inverse. (this can be too strong, maybe not)
- A hero with a lot of summonings spells.