K, played the Dune mod. It has AI support, you just need to make a "closed" net match.
You will be thankful for the lack of concrete, the 3 AIs in the game will own your ass by rushing everything they have within 8 minutes. Better have a crap ton of harvesters by then.
The concrete is not much of a loss; in fact, Westwood took it out for Emperor. It's not that useful when you can have the AI and the player working at the faster pace of this mod.
That said, I do like paving my bases, (Mostly in Tiberian Sun) it makes it look more... base like? I don't know how to put it. It protecting from Nod underground vehicles and terrain deformation on that game probably help too. :d