Well I have rinsed the shit out of this for a couple of days. Very addictive. There are however three things that are a massive anal pain.
1) You can't load from in game. You have to exit, then click single player then load the game from there.
2) You can upgrade a building before a worker is skilled enough. It fucking pains me keeping track of my workers and if I get confused and upgrade a building before the worker is skilled enough I have to tear it down and start from scratch. Just grey the option out if I don't have a worker with the skills.
3) I can't seem to train new workers. Example, I have many mines but I can't get enough fucking farmers to manage the farms I build. I build a farm and it stays "not unoccupied." My miners need fucking food! So my only current option is to go to my headquaters and each warehouse I have to make sure I have a worker with the skills I need before I build something, which is fucking gay. If I build a farm, just give me a fucking farmer!
On the plus, this looks and sounds fucking great and I have really enjoyed playing. In fact it actually looks and sounds better than settlers 2 or 3. It's clear lots of work has gone into this. Still trying to get the statistics shit figured out.