Oh, yeah, THIS was a huge one. As well as just how construction/payment worked in general. This thing costs you X metal, and this factory can deliver metal at a

Oh, yeah, THIS was a huge one. As well as just how construction/payment worked in general. This thing costs you X metal, and this factory can deliver metal at a rate of x/sec... but if you throw in all these helper units, you can up that. Very interesting and unique twist. You also didn't have to pay up front when queuing things, like you say with the opportunity to blow past your income, so your cash flow was the counter-balancing production speed limiter, but not in a way where you had to be constantly watching that bank account dollar amount before clicking "build."