Definitely feels like a puzzle game. Is that what you were going for? From your GDD, you described how the minigame in Dispatch would make a great full game (I agree btw – awesome premise), but the game itself felt to me to have a much stronger puzzle-y feel than in the minigame from Dispatch. I guess the thing with Dispatch is that game actually teaches you how to play the minigame, you're not sitting there figuring out which characters to click, what clicking even does, etc. I found myself clicking every possible screen item for the first 5 minutes and reading everything, grinding forward at a pretty slow pace, until I pieced together what to do. It felt like a puzzle game. If that was your intent, great – it seems like some of your other players enjoyed figuring it out in the dark. For my tastes personally, I would have preferred being quickly shown what to do, even if it was outside the core gameplay experience, and then being thrust quickly into the game so I could practice what I just learned. Since it is a minigame in essence, I wonder if you could borrow from Mario Party's minigames to give the player a quick pre-game tutorial on what to expect and how to play? With the simulation and all that? Anyway, just an idea.
The game itself was of course really fun – but you already know that!