I don’t think an improvement to Pixel Town would be related to its graphics. The only problems that game has are 1) the monster generators can be easily eliminated or walled away and no more ones appear, and 2) you get to the city population limit and the game is finished. I’d address the first one the same way you did here: when you mine to build something, it is possible you step into another monster generator, which would add new stress… should I extend the city and risk its inhabitants or not? The second one should just disappear, IMHO.