Well yeah sure, I could give you some of ideas I had for my CoH map (I mean I think I'll better make a CoH map of my own in SC2 later...), plus some of ideas I got lately.
Oh, one of ideas, the tower thing should be stronger and have machinegun and require some more upkeep and resources, while the non-upkeep defencive structure would be a bunker that wouldn't cost any food but would requite riflemen to attack... more ideas comming soon I hope...