Valuable comment, in fact I talk in this recent post about playing dcity in the '4th dimension' across time: https://peakd.com/dcity/@ecoinstant/lvl4-chain-golem-is-mine
And just between you and me, the strategy I employed to become the top ENTRY miner included a hugely important social component. Not all players use social strategies to win, but they can be hugely effective in dCity as certain effects have exponential scalars.