I think in retrospect the Prestige system was a bad idea from the beginning. It incentivises one group of people to dump as many high value blocks on the ground as possible, and limits the other group of people to a bunch of parameters they might not have wanted to adhere to.
In my opinion, the founder of the city should be the Mayor, and after a set period of inactivity on their part it should pass to the next person in line, and so on - or could be passed on by the Mayors themselves. The size of a settlement should be tied to the number of accounts that have a beacon within the settlement.
Alas, that’s just me daydreaming - because the system is too far along for a huge redesign now, so amendments will have to suffice.
Take away tangible rewards from the Prestige system, and use it merely as a score for those inclined. Remove the negative natural block modifier, and set all natural blocks to a Prestige score of 1 (though I’d perhaps think about making things like Mould, Growth and Sponge higher, as Gleam is worth 6, and isn’t much harder to get)