Buildings:
- general
Add an Indicator for how many upgrades already used on buildings, and what is the max level, so you don’t waste upgrades. Also make it not possible to keep using upgrades on buildings that are already maxed out. Melee barracks upgrade seems to have no effect, no increased friendly creep spawning. Ancient upgrades not working, no increased armor nor more attack speed and damage.

- Suggestions
- There are these small buildings in the bases which normally give gold in dota when you destroy them, but they are that not useful in this mode and can be replaced with buildings that grant advantages like more gold per second, less cooldowns, more movement speed, auras or other effects when you invest upgrades for these
- The two camps near the fountain can be replaced with buildings where you can buy units that defend your base like necromonican archers or all kind of units, you build your own small army which can be controlled by the players. Also they could get upgrades like more hp, damage extra effects and so on

Regarding general ult cooldowns:
I feel like no cooldown should be longer than 60 seconds in Horde Mode since there are a lot of units incoming and 100 or 120 seconds cooldown often make the hero really bad and is just not that fun. I can't think of an ability that would be really OP if it has 60 seconds cooldown, but if there is any I would still reduce the cooldown to 60 and instead nerf the damage or other effects.

Creeps:
Make it possible to buy items for creeps? I think creeps are not really good atm. and that could be an option to make them have more impact in the later stages of the game.

Cheers