Wait till the expansion is out and at least twice patched. Besides that I have a hard time praising them for this. We pre-order customers who did not take refunds PAID for this addon development and 1 year patching phase. Anything but free would be a punch in the face.
On the other hand, It is nice they still bother. But SOTS2 has issues beyond bugs. Namely that it lacks polish and has some extremely daft gameplay problems. Related to gates, engines, generally small tightly packed non-random maps and how supply works.
As long as there are no random maps I won't be playing this game anyway.