The game has changed! To the better one, I think :)
But there are many things left to do. From my - gamer - perspective, the highest problem is lack of good explanation how everything works. Icons in the game help are not very clear when you don't know all the resources (when starting the game). So now I have to create all the possible things and experiment what can be put inside which building and what will be as a result.
Second thing is that I don't know if energy system is balanced. I don't know yet, because I haven't created all the things.
The idea of "campaign" is very interesting and probably very good, but lack of "advisor" there can be harmful for newbies.
Versions 3.0 and 3.5 of the game was much easier to understand and easier to play. This one is a very good main breaker and I want to play it more! :)
Edit: consider updating/ creating wiki pages and/or some diagrams how every building works. Or just basics? Allowing names near ore icons also is a good idea :)
Edit2: found a bug: if you build a complete conveyor bridge, it will act as infinite storage. I have tried to test the capacity, but I coudn't reach the max of it. Where is the best place for bug tracking?