Networth system vs. Prestige
Assign a value to each military, research, bldg, and bldg level owned. Unlike prestige this # can go up and down a lot as you gain/lose cities. It would be a more accurate indication of what a lord's cities are worth and wouldn't just depend on how long you've been playing.
With prestige the ppl who are top ranked are mostly ppl who started at the beginning of the server. Also a guy could have a million prestige but no military and only 1 city left, which makes absolutely no sense.