Civ 3 had an option to supercharge production, by default, not a mod. A 10X in crease in production for every city.
It was very nice (It is) because you can build up massive empires in no time, and then just focus on war, with actual enemies
that same as you have access to early massive armies. It's good that it is optional, bc sometime you just want to focus
on expansion, and don't like invading armies of hundreds of units every few turns to just pop at your borders...
Expansion and city limits, minimum distance 1, maximum number of cities, etc.
It is very unlikely we will see early civs bigger than 12-15 cities each.
Even civ 6, with min. distance mod set to 1, CPU tends to stay under this limit of 12-15.
To get something similar to an Early Roman Empire in civ is like having conquered 5 or 6 neighbour civs, that is to have a civ of 50-60 cities.
That kind of achievement is only possible in Civ 3.
I totally agree that the game pace should stay streamlined and as fast as possible.
I hate leaders for this very reason. I hate they interrupt my game, and make between turns a pain... adding minutes...
whilst in civ 3, and 4 also, between turns is basically instantaneous.
Forget about workers, we will not get them back.
But press Enter to End turn immediately should be there.
AND EVERY INTERACTION IS SKIPPABLE BY PRESSING ENTER ONLY!
Cycle between all units should be avoidable as well.
Fortification and other shortkeys should be allowed by default.
Close diplomacy should be an option ( deny ANY cpu interaction if not initiated by you) like middle age Japan close to foreigner policy.
This would prevent CPU to take time away from you. And fasten in between turns a little bit.
Civ 6 and HK are such a chore to deal with that you forget how to build an empire, you lose focus on Expansion.
In HK to have more than 4 (4!) cities is basically suicide... just as another example... I'm very scared of what Civ 7 might turn into...