I think this fortification could be fun..if only mildly useful..as a support for an Ork assault army. Even though I have not played an assault army in ..like 3 years.. I still think a couple of battlecannons for 170pts would deter an opponent from certain actions. I'll have to play test some.
But what I know for sure is that I didn't want to spent $50 on the kit and be stuck with the Imperial look of the wall of martyrs.
So I built my own. I guessed on the size based on the pic GW put out where a Khorne Berzerker is standing next to one of the batteries.
Here is the prototype all ready for primer. I'm working on a how-to for the 2nd one.
More to come shortly. Comments welcome!