Hi Sebastian, Thank you for submitting more designs!
Here's my feedback....
Design #12, I like it - would you explore using an arrow at the end of the line (in the box) rather than a circle? It's looking like dice right now and while you're capturing elements of a schematic I'd like to get away from the look of dice - perhaps arrows at the end will help. I like how you've used the grey spoke and hub icon behind the large orange box - it gives it some dimension - nice. I like how you've aligned the text - It's working for me. Also, would you please explore other colors - the orange is looking wimpy to me and I'm wondering if another color would give the logo the strength I'm looking for?
Design #13, the icon is too close to buildings. One of our fears with this name was that we would be seen as building architects rather than website architects.