I know that this phase 1 is just a "graphics engine beta", but honestly I don't think its ever too early to throw in some feedback about the game.
1. I don't like that there are so few units in the start of the map. Once you have angels and golems the stream of units is pretty permanent, which means there's always combat. In the start of games, I often find myself standing still waiting for something to fight because towers are too dangerous with enemy heroes lurking waiting for a weak spot. Since the units are weaker anyway, what's the harm in having more?
2. Fog of war, in my opinion too narrow. If you knocked the "temple stone giant awesome archers and catapults and shit built on it" hero over, it would probably be somewhat covered in the fog of war, based on its pivot point. In addition, some units can fire at unseen enemies, and unseen enemies can fire at you without being "discovered" as is standard in most rts games.
3. The game looks fucking amazing. I don't know how you did it, but... holy shit.
4. Tooltips when hovering over stats please. Tell us what it affects, and how much.
1. Too many units can cause a lot of issues, I've played about 15 games now and I never really noticed your issue of not having enough mobs at the start, it lets you haras if they poke. Their strength or in this case lack of isn't the reason you should want more, more early level mobs = faster leveling and the leveling is already exponentially faster than a lot of people had predicted. If you perhaps added more units and still had the same exp for all of them, I might be inclined to agree but with the lower end of pc's just remember that if you start with 'lots' the end will have 'lots upon lots' and this might cause a lack of frames for those with a lower end computer.
2. I've noticed people being able to attack without being discovered it's a fair thing and I quite enjoy the aspect of it but wouldn't really mind seeing it stay or go, it's not very influencial, if you can't see someoen hitting you poke a bit forward and target them. Though I did notice as reg, you can aim snipe and then they move into the fog and you can still hit them also if they teleport it doesn't seem to cancel the cast bar on the snipe so they can die as they teleport to the crystal.
3. Agreed! the game does look amazing and it runs amazing on my box.
4. Tooltips to give stats would be awesome - especially of your minions that spawn from the portals, that would be great.