Map terrain is flat.
Human:
-two new intel heroes
-Priestess has Silence=Dark Ranger's Silence; Polymorph=Hex. Not sure autocast actually works on Blessing of Healing. This spell's second level can be chosen when the hero is level 2 which shouldn't be the case since spells are chosen at a distance of two levels (e.g. level 1 on hero's level 1, level 2 on hero's level 3). War Prayer=Howl of Terror.
-Silvermoon Sorceress' Fiery Dispel only works on units with buffs and summoned ones. You should mention that in the spell description. Heat Vision might be strongly overpowered in mide-late game vs Blademaster and Night Elves. Maybe reducing the AoE helps since it's a permanent spell. Firebolt=Warlock's Firebolt. It actually stuns too even if for a brief moment. The description does not mention it. It would be best to make this spell AoE based.
-Blessing of Healing doesn't have a DISBTN. It looks like a green square on F10/pause. You can make disabled versions for icons if there aren't any:
Button Manager v1.8.2
BLP Lab v0.5.0
if not, just add it properly:
Complete Icon Tutorial - All About Icons
How to Make an Icon
Orc:
-two agility heroes. They move very fast with level 1 Endurance Aura on them.
-Celerity Aura=partial Endurance Aura? Do they stack at least? But anyways, overpowered both of them at once.
-Mana Harvest doesn't require any mana? That's unbalanced considering the hero doesn't even need to stand still. This spell can be cast on friendly (player owned) units too.
-Blood Rush=partial Inner Fire? If yes, then do they both stack? The icon doesn't have DISBTN.
-Haste's buff doesn't look like the spell but like the Boots of Quel'thalas. Also, does this spell stack with Scroll of Speed?
-Storm of Arrows=Blizzard.
Undead:
-Split Bats says splits the Pandaren Vampiress
I cannot see the bats, nor select them without having the hero in a control group. This spell is insta hero escape.
-some of the Necromancer's spell descriptions don't look too good. His Raise Dead on autocast has another icon. This spell is basically the actual Necromancer's spell. Not creative. The skeletons are too many from the get-go considering they can be upgraded (attack+armour) unlike usual summoned units.
-Harvest Blood=Cannibalize.
-Placeholder for Corpse Digging but do you really have to look inside the learn spell box for every spell level details? What after the spell's third level? How can you see the description then? The spell's aura/buff's icon=Trueshot Aura. Weird, it turned to Command Aura's, then to Inner Fire's. I guess it depends on the spell's level. What happens to the corpses if they are permanent? You have to use a spell on them to be able to create more somewhere else.
-Disease Cloud has the Hydralisk's soundset and you can move it. Should it be moved? Problem is that it blocks pathing. It should not be treated as an obstacle. Maybe make it fly and maybe reduce its movement speed.
-Bleed=Slow Poison.
-the problem with Dark Garden is that it's permanent and creates blight. It also spawns the Skeletons way too fast. Alright so it's not permanent but it doesn't have a visible timer and the description doesn't say anything about it either.
Night Elf:
-two intel heroes.
-Druid of the Beak's portrait has issues. Maybe you could ask someone to make one for you or just to add Furion's portrait instead.
-Cyclone=Cyclone.
-Flowers of Kalimdor=partial Unholy Aura?
-Butterfly Dance=Locust Swarm. Even the description mentions the Crypt Lord.
-Grow Plant=Serpent Ward.
-Wild Growth=partial Rejuvenation.
-I suggest Metamorphosis or Bear Form for Wildkin Form since the unit is taken out of the control group (e.g. CTRL+1) after transformation. However, it will come back after the spell ends. Bash and War Stomp are too familiar. Be creative. Also, the Wildkin doesn't have a hero glow. You could add one:
How to add Hero Glow without Modeling
Neutral:
-you've removed some heroes instead of adding new ones like for the races... or you didn't save the map on the latest melee patch (in map options) since the Firelord, Tinker and Alchemist are missing.
-Mecha Gnome has Siege Damage. That's unusual and possibly too effective on buildings. This hero has a weird soundset.
-Energy Barrier=Mana Shield.
-Tree Fuel=Eat Tree. Also, doesn't cost any mana.
-Once Bouncy Rockets are used, the hero attack from a distance regardless if he turns off/reverts the ability.
-Stun Rocket=Firebolt/Stormbolt. Problem is, that stun is huge. I hope heroes have a max of 5 seconds.
-Magic Interception=Devour Magic.
-not sure how Detection Goggles is fair compared to Heat Vision. This one costs mana and is temporary.
-there's a problem with King Shredder's model as it can be selected/clicked somewhere a bit far from it's actual selection circle/model edges.
-not sure it's fair for the King Shredder to have a passive ability which deals splash/area damage while other heroes need an orb or to learn a spell for such a capability.
-Kill Button's animation (the rocket) hits the target and only after some seconds does the target get hurt/killed.
You could try finding some new soundsets.