You could even exaggerate by reinforcing the structure, make the flag bigger and peek the cannons out in the 4 directions.
I would also add the other details the original had in Warcraft 2.
The spikes in the 6 direction overloads a bit too much the design. I'm wondering how it would look with just 4 bigger ones.
The Wc2 cannon tower have open traps because the base tower had almost no windows. Here adding the traps on already open windows is a bit silly.
The front ladder could add more volume, you call.