I was already playing on the latest (0.1.5). I guess it made me upgrade the population sooner than smarter collect was because of the coin price difference. around 2 coins vs 20 coins. (not the exact, i forgot lol).
I just restarted from scratch and avoided upgrading the population entirely, almost finished all the upgrades. a big improvement from the first version. good job!
just a comment though with the update compared to the first version. the upgrade/shop's UI got waaaay too small.
can't wait for the next update!