Project Sistine - A medium-scale overhaul

For unknown reason we found the Quick Deals mod enhances AI performance so it's now recommended to use it with this mod. This mod doesn't need Quick Deals mod to run. This mod needs ALL DLCs to work. Project Sistine (codename, not final name) is the largest mod we have ever made, and a total conversion mod that modified nearly every aspect of the vanilla Civilization VI. This mod aims to introduce principles and methods used in previous Civilization titles to balance available choices in the game to provide more meaningful strategies, thus making the gameplay more interesting. Summary By fanatics, for fanatics. This mod is designed by veteran Civilization players who played this franchise since more than 10 years ago and is built with referring to all previous titles. Most changes are inspired by classic titles in the Civilization franchise to keep the overall gameplay and strategic complexity of the modded rule set fits the style they provided. Top-down overhaul. Interactions among game systems are carefully considered to provide a novel and better experience different from the vanilla rule set. Restricted unmoddable but harmful-if-untouched systems (e.g. Emergencies, World Congress, Monopolies) without totally removing them to keep the game flavor intact. True AI improvements. We accelerated Deity AIs' Science Victory by ~100T without any additional cheats while kept turns needed to win for human players. This mod might be the first overhaul mod that take AI performance into consideration. Stability and performance. This mod kept conservative about adding new contents to prevent the gameplay from being messed - more importantly, this mod won't slow down late game to an unacceptable extent or un-stabilize the game to make it crash more. It's also multiplayer compatible. Detailed Changes Global parameters: Tweaked a set of global parameters, including reduction to cost escalation factor, XP needed to upgrade alliance level and barbarian strength whose unreasonable v