Ok I'm on my 3rd playthrough (gold first 2), and my feedback is: meh. Most of this has been mentioned but...
The mini-game is ok, though I think having only 1 spare click is a bit obnoxious, especially since the rewards won't ever get the 4x, which means this gets more useless as you get to later levels and the time constraint is tighter. This could be ameliorated by having the reset timer go down or by increasing the size and # goods available through the mini-game in later settlements.
Until you get Texcotzingo unlocked cocoa beans are a bigger pain than the equivalent in the Vikings, which is exacerbated by charging for roads. It doesn't seem well balanced. Having to think about how many beans you're going to get back to decide if an extra road or two is worth it is not the fun kind of math.
Impediments/removal tool - at first glance it seems like Egypt and it's not a problem there at all, and in both cases you have to pay for roads, but because the beans are so tight here, buying extra roads is not as easy as Egypt, so working around impediments (which frequently means more roads) is more difficult.
1 hr to build the first shrine, and 30 s for initial house & deco is odd. I guess 30 s is better than 1 min but I don't get it, especially since it feels like a trade off for the much worse 1 hr build time for the shrine when cocoa beans are already too hard to come by early on.
13 runs to finish is better than Vikings (15) but worse than Egypt (10) or even Japan (also 13 but quicker and much less fussy)
So far it has all worked out well enough, but it feels like they took the worst aspects of the others to pile into this one, and so it is less fun than the other settlements. This may have been balanced by having the best overall reward(s) but the main reward is worse than Vikings (mostly because it's 33% bigger), and the secondary is worse than Egypt (my opinion, but the def boost to attacking army trumps the extra FP and goods). Mind you, better rewards still wouldn't have made this fun.
I've finished all the others and I will this too, but I'm not going to kill myself to get all gold, and I'll go back to Egypt for a low stress settlement with a better secondary building after I'm done (at least until another is released).