Eh... I'm not really sure how I feel about this.
Part of making my empire feel alive and thriving was seeing all those workers running around making improvements and reshaping the landscape.
Now they're on 4 charges each and get auto-deleted after they're spent.
This seems like a step backwards for me. I mean where exactly did they go? Did they die from being overworked? Am I literally working these people to death?
You could say it didn't make much sense for them to carry on living through the ages, but I just assumed that they, like military units, were representative of entire groups whose members gradually got replaced over the years.
Now what happens to them? Do they just lose their jobs and melt back into the population? Obviously not since I don't think a city's population will receive a boost as a result of them disbanding.
The only logical answer then is that they just die off and new ones have to be trained from scratch. Even from a pure gameplay standpoint, this just seems unnecessarily tedious. It was fine for things like missionaries and great people because they drew from other resources unrelated to buildings and military units, and either way they weren't really that necessary. More like bonus units.
Do I seriously need to hold off now on whatever else I was planning every few turns just to churn out more builders?
"Building" the builders gave them a certain amount of materials, and they used up those materials, and then went home.
As for the feel, a few thoughts
1-you don't need to build roads (roads are now free)
2-they get 4 charges and use them instantly... which means you only need to make ~1 Builder per 4 population
3-since builders act similar to workboats, perhaps they will take a page from BE and eliminate work boats... instead your Builders will embark to develop the seas... making it Much easier if the same unit can improve everything you need.
4-Districts (and wonders now) are essentially tile improvements built in the city...Builders mean all the other tile improvements are built in the city as well...each tile improvement has a cost in terms of hammers (basically 1/4 Builder cost for normal improvements)
5-because of districts less population will be working "normal tiles" so that's less often
As for pillaging... I could see a few was to deal with it
1-Builders use a charge to repair
2-Builders repair it for free
3-Pay gold to repair
4-Work the tile for X turns to repair (like cottages)
5-city has a "repair pillaged tiles" project
Given that Districts take up tiles and can be pillaged, I'd probably go with gold... its the most flexible and the least micromanagement (restrictions: must be in your terrain, no enemy units within 2 tiles... improvements out of your terrain get improved/repaired with military engineers)