I went back to the game after a year and this is the only thing that frustrates me a little. It is perhaps the only RTS where I feel that AI is trying to spam me with towers and fortresses. It's a game of cat and mouse. In my opinion, two steps should be considered:
- option in Settings to set DESTROY/ATTACK approach as default, not the CAPTURE. That would make life a little easier than constantly pressing Ctrl. If it's there, I didn't find it; feel free to correct me.
- adjust AI behavior to build stone walls around critical structures / city rather than towers across the map at least in case of Defense or Balanced AI mode.
Personally, I think that the power of towers is not such a problem; but rather their use by AI in general.