How often can these foci be changed / moved? It's not every 25 years again is it? But I do like the idea, encourage the steel industry in Pennsylvania, the Fabric / clothes in another place, timber / furniture elsewhere.
Can we place more than one focus in a state, such as adding both clerks and craftsmen in a state with factories?
Do we still have life sustainability and range from a port for colonization? I like the mechanic that you have to choose between the home front and colonization.
I'd have to see how immigration in handled to comment on promote immigration, but I hope it doesn't all go to just one place. I'd also have to see how the railroad build logic is handled to guesstimate how useful "build railroads here" will be. In Vicky I never had any problems covering the US with railroads. I'm guessing it will impact invention spread as well as actual construction.