I wish the author did not put every screenshot in a gif, I'd have preferred to be able to look at the results in a less stressful way. 2 seconds to switch to another screenshot, that's way too fast!
On a side note, it would be interesting to try to apply the same technique to units and effects (explosions, fire, etc). I didn't see a mention of it by the author so I wonder if there's a technical limitation here that wasn't mentioned.