Devs, here's some food for thought while you're running your numbers this weekend. Making the buildings listed for review stronger by changing stats given alone probably won't draw many new fans. Existing defense-oriented kingdoms (i.e. turtles) and balanced builds will simply get a bit more powerful.
The two areas that should be looked at to bring these now novelty buildings into common usage are in my opinion plunder draw, first and foremost, and troop loss. Were the buildings with less attack power to yield more gold, people would convert in droves. Were these buildings to lose less troops per attack or even just defending, people would also have reason to try them out.
Again, just something to think about. Cheers!