Nobody has to "recode" anything. Sassy is fine if you're not going to have 40 people on your server at a time, so why don't some of you pick up a generic copy of CityRPG, build a cool city layout, hire great moderation, and watch a city develop?
I ran my CityRPG with Sassy no problem, developing one of the most quickly built cities in all of Blockland. If you're not in the game to watch an actual city develop, you shouldn't be playing at all.
so stop laying around and host something decent