I know that RoM and AND's large tech tree has made using great people to research techs pretty much useless. What could be done to make it useful again? My Plan is to have great people subsidize the cost of technologies for a 20 turn window. Once a player chose the "Bulb" Icon on the great person, all technologies associated with that great person would be 50% cheaper. The cost reduction would fade 5% per turn. Players would not be able to use the effect more than once at a time. An example: Say you just earned a Great Engineer, and selected the bulb action. All production based technologies, like Engineering, Masonry, Construction, etc... would be 50% less science to research. Each turn the cost of researching them would rise by 5%, until they research full price again. 8 Turns in, you earn a Great Scientist. You can use the Scientist to bulb as well, reducing the research cost of all science related technologies. Then 16 turns in, you earn another Great Engineer. You can't bulb him, you need to wait 4 turns before he can be used. New Idea: Great People will still give you a free tech, but in addition to that, they will reduce tech costs in respect to your rank. If you are in 2nd place out of 8 players, the cost of ALL technologies drop by 2/8 (or 25%). If you're in first place, it has no effect. The effect is larger, the farther you are behind, acting as a rubber band mechanism for behind civilizations. The effect is short-lived, the same length of time as golden ages.